Laars Heating Systems · Error codes
Laars Heating Systems error codes and alerts
Identical code numbers can mean different things on different controllers, so every entry is tied to the documented series, controller and manual version. A code is never a diagnosis.
If you smell gas
- Stop what you are doing. Do not use phones, switches, matches or anything that can spark inside.
- Go outside and leave the door open behind you.
- Call the FortisBC 24-hour emergency line at 1-800-663-9911 or dial 911.
Only after that, call ROMA about the boiler. Official guidance: FortisBC gas leaks and odour.
Laars FT Series Wall (FTHW heat-only and FTCW combi; numeric fault codes, manuals 1483C / 1487C)
10
Flame extinguished eight times. The flame has been extinguished eight times, so monitor gas pressure to the appliance, check the gas valve w…
Details
11
Ignition failed ten times. Ignition has failed ten times, so monitor the gas pressure, check the gas valve wire, check the flame detection s…
Lockout
16
Operating temperature sensor detects water temperature greater than 203°F (95°C). The operating temperature sensor detects water temperature…
Details
20
Condensate drain trap fault (closed is normal, open is fault). Condensate closed is normal while open is a fault, so check the condensate an…
Details
28
Overheat sensor open or short. The overheat sensor is open or shorted, so check the overheat temperature sensor connections and replace the …
Details
29
Loose wire or poor connection at PCB board. The error occurs when the blue wire inside the plug is shorted to ground or has a poor contact, …
Details
32
DHW sensor open or short. The DHW outlet temperature sensor is open or shorted, so check the sensor connections and replace the sensor if it…
Details
33
CH temperature sensor open or short. The CH temperature sensor is open or shorted, so check the CH temperature sensor connections and replac…
Details
35
Venting (exhaust) sensor open or short. The venting exhaust temperature sensor is open or shorted, so check its connections and resistance, …
Details
36
Abnormal supply voltage. The supply voltage is too low to operate, and this error code will go away when the supply voltage returns to the n…
Details
37
Abnormal supply frequency. The supply frequency is too high to operate, and this error code will go away when the supply frequency returns t…
Details
38
Error appears when control stores data, but data is not saved. The error appears when the control stores data but the data is not saved, so …
Details
40
Gas leakage detected for greater than five seconds, or three times within ten minutes. Gas leakage is detected for greater than five seconds…
Details
41
Fan speed too high with flame on. The fan speed is too high with the flame on, so check the vent connections and burner assembly and check i…
Details
42
LWCO jumper disconnected. The LWCO jumper is disconnected, so ensure the LWCO jumper wire is properly connected to clear this soft lock erro…
Details
43
Burner overheat switch open. The burner overheat switch is open, so check the burner overheat switch connections and replace the switch if i…
Details
44
Air pressure sensor (APS) fault. The air pressure sensor has a fault, so check the vent pipe and air intake pipe for blockages and inspect t…
Details
45
Air pressure sensor (APS) open. The air pressure sensor circuit is open, so check the APS connection and replace the APS if the problem cont…
Details
61
Fan speed feedback signal abnormal. The fan speed feedback signal is abnormal, so check the connections to the fan and check the intake and …
Details
66
Mixing valve initial value error (mixing valve cannot return to initial position). The mixing valve cannot return to its initial position, s…
Details
68
Mixing valve operation error (mixing valve stuck in initial position). The mixing valve is stuck in its initial position, so turn power off …
Details
70
Register, RAM, ROM, I/O port, AD abnormal, important EPROM data or safe data abnormal. The register, RAM, ROM, I/O port, or AD is abnormal o…
Details
72
Flame signal detected before ignition. A flame signal was detected before ignition, so check the appliance cover, look through the sight gla…
Lockout
76
Poor communication (control display). There is poor communication between the main control and the display panel, so check the connections f…
Details
77
Outdoor sensor error. The outdoor sensor has an error, so check the outdoor sensor wiring and connections and replace the sensor if its resi…
Details
78
Cascade error. A cascade error requires referring to the manufacturer's document 1349 for cascading the FT boiler.…
Details
80
Low water level sensor (low water level detected four consecutive times). Low water level was detected four consecutive times, so ensure all…
Details
81
Low water level circuit. There is a low water level circuit fault, so ensure all valves are open to the appliance and check the wiring conne…
Details
85
Freeze protection (appliance detected water temperature below 34°F/1°C). The appliance detected water temperature below 34°F, so ensure the …
Details
94
Exhaust sensor detects vent temperature greater than 190°F (88°C). The exhaust sensor detects vent temperature greater than 190°F, so check …
Details
Laars FT Series Floor (FTHF heat-only and FTCF combi; numeric fault codes, manuals 1510B / 1505C)
10
Flame has extinguished eight times. The flame has been extinguished eight times, so monitor the gas pressure to the appliance, check the gas…
Details
11
Ignition has failed ten times. Ignition has failed ten times, so monitor the gas pressure, check the gas valve wire and flame detection sens…
Lockout
16
Operating temperature sensor detects water temperature greater than 203°F (95°C). The operating temperature sensor detected a water temperat…
Details
20
Blocked condensate switch fault. The condensate switch is blocked, so check the condensate and main controller connections, check the conden…
Details
28
Overheat sensor fault. The overheat sensor has a fault, so check the overheat temperature sensor connections and replace the sensor if its r…
Details
29
Factory installed jumper missing or not connected. The factory installed jumper is missing or not connected, which occurs when the blue wire…
Details
30
System sensor open or short. The system sensor is open or shorted, so make sure the system sensor connection is secure and check the system …
Details
32
DHW outlet sensor fault. The DHW outlet sensor has a fault, so check the DHW or CH temperature sensor connections and replace the sensor if …
Details
33
Operating water temperature sensor fault. The operating water temperature sensor has a fault, so check the DHW or CH temperature sensor conn…
Details
35
Venting (exhaust) sensor open or short. The venting exhaust temperature sensor is open or shorted, so check the sensor connections and resis…
Details
37
Power frequency fault. The supply frequency is too high to operate, so ensure the appliance is properly wired to a power source meeting the …
Details
38
EPROM fault. An EPROM fault has occurred, so press the power button to clear the error code and contact technical support if the problem per…
Details
40
Gas leakage fault. A gas leakage fault has occurred, so check that the appliance cover is secure, check the gas connections for leakage with…
Details
41
Fan high RPM fault. The fan is running with too high an RPM, so check the vent connections and the burner assembly for blockages and replace…
Details
42
External LWCO/safety fault. An external low water cut-off or safety fault has occurred, so ensure the LWCO jumper wire is properly connected…
Details
43
Burner over-heating fault. The burner is over-heating, so check the burner overheat switch connections and replace the switch if its resista…
Details
44
Air pressure sensor range (APS) fault. The air pressure sensor is out of range, so check the vent pipe and air intake pipe for blockages, in…
Details
45
Air pressure sensor fault. The air pressure sensor has a fault, so check the APS connection and replace the APS if the problem persists. The…
Details
61
Fan fault. The fan has a fault, so check the connections to the fan, check the intake and exhaust for blockages and debris, and check for AC…
Lockout
70
MCU self diagnostics fault. The MCU self diagnostics have detected a fault, so turn the power off and on at the main power switch internal t…
Details
72
Flame signal fault. A flame signal fault has occurred, so check that the appliance cover is secure, look through the boiler sight glass for …
Lockout
76
Display to main control communication fault. Communication from the display to the main control has failed, so check the connections from th…
Details
80
Internal low water cut-off fault. An internal low water cut-off fault has occurred, so ensure all valves are open and all air has been purge…
Details
81
Internal low water cut-off fault. An internal low water cut-off fault has occurred, so ensure all valves are open to the appliance and check…
Details
85
Anti-freeze fault (appliance has detected water temperature below 34°F/1°C). The appliance has detected a water temperature below 34°F (1°C)…
Details
94
Exhaust gas temperature fault. The exhaust gas temperature sensor has a fault, so check the DIP switch Max Fire setting, check the exhaust t…
Details
Laars NeoTherm Residential (NTH 080–285; hold and lockout codes, I&O 1252K section 11.H with service-manual additions 1291)
1
Unconfigured safety data. On a new device the safety data is unconfigured, so complete the device configuration and safety verification and …
Details
2
Waiting for safety data verification. The device is in Configuration mode and its safety parameters need verification, so verify the safety …
Details
3
Internal fault: Hardware fault. The control reports an internal hardware fault, and this condition is listed as a Hold in the error table. T…
Details
4
Internal fault: Safety Relay key feedback error. The control reports an internal fault for the safety relay key feedback error, which the er…
Details
5
Internal fault: Unstable power (DC) output. The DC power output of the control is unstable, so reset the module and replace it if the fault …
Details
6
Internal fault: Invalid processor clock. The processor clock is invalid, which the control reports as an internal fault listed as a Hold. Th…
Details
7
Internal fault: Safety relay drive error. The control detected a safety relay drive error and reports this internal fault as a Hold. The tab…
Details
8
Internal fault: Zero crossing not detected. The zero crossing of the supply waveform was not detected by the control, which reports this int…
Details
9
Internal fault: Flame bias out of range. The control reports an internal fault because the flame bias is out of range, and the condition is …
Details
10
Internal fault: Invalid burner control state. The control reports an internal fault because the burner control state is invalid, and the con…
Details
11
Internal fault: Invalid burner control state flag. The control reports an internal fault because the burner control state flag is invalid, a…
Details
12
Internal fault: Safety relay drive cap short. The control detected that the safety relay drive capacitor is shorted and reports this interna…
Details
13
Internal fault: PII (Pre-Ignition Interlock) shorted to ILK (Interlock). The pre-ignition interlock input is shorted to the interlock input,…
Lockout
15
Internal fault: Safety relay test failed due to feedback ON. The safety relay self-test failed because the feedback input stayed ON, and thi…
Details
16
Internal fault: Safety relay test failed due to safety relay OFF. The safety relay self-test failed because the safety relay stayed OFF, and…
Details
17
Internal fault: Safety relay test failed due to safety relay not OFF. The safety relay self-test failed because the safety relay did not tur…
Details
18
Internal fault: Safety relay test failed due to feedback not ON. The safety relay self-test failed because the feedback did not turn ON, so …
Details
19
Internal fault: Safety RAM write. The control reports an internal fault because the safety RAM write failed, and the condition is listed as …
Details
20
Internal fault: Flame ripple and overflow. The control detected flame ripple and an overflow of the flame signal, and reports this internal …
Lockout
21
Internal fault: Flame number of sample mismatch. The control reports an internal fault because the number of flame samples did not match, an…
Details
22
Internal fault: Flame bias out of range. The control reports an internal fault because the flame bias is out of range, and the condition is …
Details
23
Internal fault: Bias changed since heating cycle starts. The flame bias changed since the heating cycle started, and the control reports thi…
Details
24
Internal fault: Spark voltage stuck low or high. The spark voltage is stuck either low or high, and the control reports this internal fault …
Lockout
25
Internal fault: Spark voltage changed too much during flame sensing time. The spark voltage changed too much during the flame sensing time, …
Lockout
26
Internal fault: Static flame ripple. The control detected a static flame ripple condition and reports this internal fault as a Hold. The tab…
Details
27
Internal fault: Flame rod shorted to ground detected. The control detected that the flame rod is shorted to ground, and reports this interna…
Lockout
28
Internal fault: A/D linearity test fails. The A/D linearity test failed, and the control reports this internal fault as a Hold. The table cl…
Details
29
Internal fault: Flame bias cannot be set in range. The flame bias cannot be set within its required range, and the control reports this inte…
Details
30
Internal fault: Flame bias shorted to adjacent pin. The flame bias input is shorted to an adjacent pin, and the control reports this interna…
Details
31
Internal fault: SLO electronics unknown error. An unknown error occurred in the SLO electronics, and the control reports this internal fault…
Details
32-46
Internal fault: Safety Key 0 through 14. Internal faults for Safety Key 0 through Safety Key 14 are reported under printed codes 32 through …
Details
47
Flame rod to ground leakage. The control reports a flame rod to ground leakage condition and lists it as a Hold. The table classifies it as …
Lockout
48
Static flame (not flickering). The control reports a static flame condition where the flame is not flickering, and lists it as a Hold. The t…
Details
49
24 VAC voltage low/high. The 24 VAC supply voltage is low or high, so check the module and display connections and verify that the power sup…
Details
50
Modulation fault. A modulation fault is reported as an internal sub-system fault, and the condition is listed as a Hold. The table classifie…
Details
51
Pump fault. A pump fault is reported as an internal sub-system fault, so review the alert messages for possible trends and correct possible …
Details
52
Motor tachometer fault. A motor tachometer fault is reported as an internal sub-system fault, so review the alert messages for possible tren…
Details
53
AC input phases reversed. The AC input phases are reversed, so check the module and display connections and verify that the power supply fre…
Details
59
Internal Fault: Mux pin shorted. A mux pin is shorted, which is reported as an internal fault, so reset the module and replace it if the fau…
Details
61
Anti short cycle. The anti short-cycle timer prevents the burner from firing and then shutting off quickly when a call for heat changes stat…
Details
62
Fan speed not proved. The fan speed was not proved during the operating sequence, and this condition will not be a lockout fault because it …
Details
63
SAFETY CHAIN (OFF). The safety chain is off, so test all installed safety devices such as the condensate level switch and heat exchanger fus…
Details
64
PII (Pre-Ignition Interlock) OFF. The pre-ignition interlock is off, so check the wiring and the pre-ignition interlock switches, check the …
Lockout
67
ILK (Interlock) OFF. The interlock is off, so check the wiring for possible shorts and check the interlock switches, verifying voltage throu…
Details
68
ILK (Interlock) ON. The interlock is on, so check the wiring for possible shorts and check the interlock switches, verifying voltage through…
Details
70
Wait for leakage test completion. The control is waiting for the leakage test to complete, which is an internal fault, so reset the module a…
Details
78
Demand lost in run. Demand was lost while the unit was in run, so check the wiring and correct any possible errors and replace the module if…
Details
79
Outlet high limit. The outlet high limit opened, so check the wiring for any possible errors, replace the outlet high limit, and replace the…
Details
80
DHW (Domestic Hot Water) high limit. The DHW high limit opened, so check the wiring for any possible errors, replace the DHW high limit, and…
Details
81
Delta T limit. The Delta T limit was exceeded, so check the inlet and outlet sensors and pump circuits for proper operation and recheck the …
Details
82
Stack limit. The stack limit opened, so check the wiring for any possible errors, replace the stack high limit, and replace the module if th…
Details
91
Inlet sensor fault. The inlet sensor has a fault, so check the wiring for possible errors, replace the inlet sensor, and replace the module …
Details
92
Outlet sensor fault. The outlet sensor has a fault, so check the wiring for possible errors, replace the outlet sensor, and replace the modu…
Details
93
DHW (Domestic Hot Water) sensor fault. The DHW sensor has a fault, so check the wiring for possible errors, replace the DHW sensor, and repl…
Details
94
Header sensor fault. The header sensor has a fault, so check the wiring for possible errors, replace the header sensor, and replace the modu…
Details
95
Stack sensor fault. The stack sensor has a fault, so check the wiring for possible errors, replace the stack sensor, and replace the module …
Details
96
Outdoor sensor fault. The outdoor sensor has a fault, so check the wiring for possible errors, replace the outdoor sensor, and replace the m…
Details
97
Internal Fault: A2D mismatch. The control reports an internal fault because of an A2D mismatch, and the condition is listed as a Lockout. Th…
Details
98
Internal Fault: Exceeded VSNSR voltage tolerance. The VSNSR voltage exceeded its tolerance, which is an internal fault, so reset the module …
Details
99
Internal Fault: Exceeded 28V voltage tolerance. The control reports an internal fault because the 28V voltage exceeded its tolerance, and th…
Details
100
Pressure Sensor Fault. The pressure sensor has a fault, so verify that it is a 4-20 mA source, check the wiring for possible errors, test th…
Details
105
Flame detected out of sequence. A flame was detected out of sequence, so check that no flame is present in the combustion chamber and verify…
Lockout
106
Flame lost in MFEP. The flame was lost during the main flame establishing period, so check the main valve wiring and operation and check the…
Details
107
Flame lost early in run. The flame was lost early in the run, so check the fuel supply and pressure and repeat the turndown tests. The table…
Details
108
Flame lost in run. The flame was lost during the run, so check the fuel supply and pressure and inspect the ignition transformer electrode a…
Lockout
109
Ignition failed. Ignition failed, so check the main valve wiring and operation, check the fuel supply and pressure, and inspect the ignition…
Lockout
110
Ignition failure occurred. An ignition failure occurred, which is handled by the recycle and hold option and is an internal hardware test, s…
Lockout
111
Flame current lower than weak threshold. The flame current is lower than the weak threshold, and this condition is listed as a Hold in the e…
Lockout
113
Flame circuit timeout. Flame was sensed during the initiate or off cycle, which produces a Hold for 240 seconds and then a lockout if the fl…
Details
122
Lightoff rate proving failed. The control reports that lightoff rate proving failed during the start-up sequence, and the condition is liste…
Details
123
Purge rate proving failed. The control reports that purge rate proving failed during the purge sequence, and the condition is listed as a Lo…
Details
128
Fan speed failed during prepurge. Fan speed failed during prepurge, so check the wiring for potential errors, check the variable-speed fan d…
Details
129
Fan speed failed during preignition. Fan speed failed during preignition, so check the wiring for potential errors, check the variable-speed…
Lockout
130
Fan speed failed during ignition. Fan speed failed during ignition, so check the wiring for potential errors, check the variable-speed fan d…
Lockout
131
Fan movement detected during standby. Fan movement was detected during standby, so check the wiring for potential errors, check the variable…
Details
132
Fan speed failed during run. Fan speed failed during run, so check the wiring for potential errors, check the variable-speed fan drive abili…
Details
137
ILK (Interlock) failed to close. The interlock failed to close, so check the wiring for possible shorts, check the interlock switches for pr…
Details
149
Flame detected. A flame was detected during the safe start check up to the flame establishing period, which creates a Hold or Lockout condit…
Lockout
150
Flame not detected. Flame was not detected during the safe start check up to the flame establishing period, so the sequence returns to stand…
Details
152
Combustion pressure on. The combustion pressure switch is reported on, so check the wiring for errors, inspect the combustion pressure switc…
Details
153
Combustion pressure off. The combustion pressure switch is reported off, so check the wiring for errors, inspect the combustion pressure swi…
Details
154
Purge fan switch on. The purge fan switch is reported on, so check the wiring for errors, inspect the purge fan switch J6 terminal 3 and its…
Details
155
Purge fan switch off. The purge fan switch is reported off, so check the wiring for errors, inspect the purge fan switch J6 terminal 3 and i…
Details
156
Combustion pressure and flame on. Combustion pressure and flame are both detected on, so check that no flame is present in the combustion ch…
Lockout
157
Combustion pressure and flame off. Combustion pressure and flame are both detected off, so check that no flame is present in the combustion …
Lockout
158
Main valve on. The main valve is reported on, so check the main valve terminal wiring and correct any errors, then reset and sequence the mo…
Details
159
Main valve off. The main valve is reported off, so check the main valve terminal wiring, be sure the on/off switch on the bottom of the valv…
Details
160
Ignition on. The ignition output is reported on, so check the ignition terminal wiring and correct any errors, then reset and sequence the m…
Lockout
161
Ignition off. The ignition output is reported off, so check the ignition terminal wiring and correct any errors, then reset and sequence the…
Lockout
164
Block intake on. The block intake switch is reported on, so check the wiring for errors, inspect the block intake switch, and reset and sequ…
Details
165
Block intake off. The block intake switch is reported off, so check the wiring for errors, inspect the block intake switch, and reset and se…
Details
172
Main relay feedback incorrect. The main relay feedback is incorrect, which is an internal fault, so reset the module and replace it if the f…
Details
174
Safety relay feedback incorrect. The safety relay feedback is incorrect, which is an internal fault, so reset the module and replace it if t…
Details
175
Safety relay open. The safety relay is open, which is an internal fault, so reset the module and replace it if the fault repeats. The table …
Details
176
Main relay on at safe start check. The main relay was on at the safe start check, which is an internal fault, so reset the module and replac…
Details
178
Safety relay on at safe start check. The safety relay was on at the safe start check, which is an internal fault, so reset the module and re…
Details
184
Invalid blower/HSI output setting. The blower or HSI output setting is invalid, so recheck the selected parameters and reverify and reset th…
Details
185
Invalid Delta T limit enable setting. The Delta T limit enable setting is invalid, so recheck the selected parameters and reverify and reset…
Details
186
Invalid Delta T limit response setting. The Delta T limit response setting is invalid, so recheck the selected parameters and reverify and r…
Details
187
Invalid DHW (Domestic Hot Water) high limit enable setting. The DHW high limit enable setting is invalid, so recheck the selected parameters…
Details
188
Invalid DHW (Domestic Hot Water) high limit response setting. The DHW high limit response setting is invalid, so recheck the selected parame…
Details
189
Invalid flame sensor type setting. The flame sensor type setting is invalid, so recheck the selected parameters and reverify and reset the m…
Details
192
Invalid igniter on during setting. The igniter on during setting is invalid, so recheck the selected parameters and reverify and reset the m…
Lockout
193
Invalid ignite failure delay setting. The ignite failure delay setting is invalid, so recheck the selected parameters and reverify and reset…
Lockout
194
Invalid ignite failure response setting. The ignite failure response setting is invalid, so recheck the selected parameters and reverify and…
Lockout
195
Invalid ignite failure retries setting. The ignite failure retries setting is invalid, so recheck the selected parameters and reverify and r…
Lockout
196
Invalid ignition source setting. The ignition source setting is invalid, so recheck the selected parameters and reverify and reset the modul…
Lockout
197
Invalid interlock open response setting. The interlock open response setting is invalid, so recheck the selected parameters and reverify and…
Details
198
Invalid interlock start check setting. The interlock start check setting is invalid, so recheck the selected parameters and reverify and res…
Details
199
Invalid LCI (Limit Control Input) enable setting. The LCI enable setting is invalid, so recheck the selected parameters and reverify and res…
Details
200
Invalid lightoff rate setting. The lightoff rate setting is invalid, so recheck the selected parameters and reverify and reset the module, v…
Details
201
Invalid lightoff rate proving setting. The lightoff rate proving setting is invalid, so recheck the selected parameters and reverify and res…
Details
202
Invalid MFEP (Main Flame Establishing Period) time setting. The MFEP time setting is invalid, so recheck the selected parameters and reverif…
Details
203
Invalid MFEP (Main Flame Establishing Period) flame failure response setting. The MFEP flame failure response setting is invalid, so recheck…
Lockout
204
Invalid NTC sensor type setting. The NTC sensor type setting is invalid, so recheck the selected parameters and reverify and reset the modul…
Details
205
Invalid outlet high limit response setting. The outlet high limit response setting is invalid, so recheck the selected parameters and reveri…
Details
207
Invalid PII (Pre-Ignition Interlock) enable setting. The PII enable setting is invalid, so recheck the selected parameters and reverify and …
Lockout
210
Invalid postpurge time setting. The postpurge time setting is invalid, so recheck the selected parameters and reverify and reset the module,…
Details
211
Invalid power up with lockout setting. The power up with lockout setting is invalid, so recheck the selected parameters and reverify and res…
Details
212
Invalid preignition time setting. The preignition time setting is invalid, so recheck the selected parameters and reverify and reset the mod…
Lockout
213
Invalid prepurge rate setting. The prepurge rate setting is invalid, so recheck the selected parameters and reverify and reset the module, v…
Details
214
Invalid prepurge time setting. The prepurge time setting is invalid, so recheck the selected parameters and reverify and reset the module, v…
Details
215
Invalid purge rate proving setting. The purge rate proving setting is invalid, so recheck the selected parameters and reverify and reset the…
Details
216
Invalid run flame failure response setting. The run flame failure response setting is invalid, so recheck the selected parameters and reveri…
Lockout
217
Invalid run stabilization time setting. The run stabilization time setting is invalid, so recheck the selected parameters and reverify and r…
Details
218
Invalid stack limit enable setting. The stack limit enable setting is invalid, so recheck the selected parameters and reverify and reset the…
Details
219
Invalid stack limit response setting. The stack limit response setting is invalid, so recheck the selected parameters and reverify and reset…
Details
220
Unconfigured Delta T limit setpoint setting. The Delta T limit setpoint is unconfigured, so recheck the selected parameters and reverify and…
Details
221
Unconfigured DHW (Domestic Hot Water) high limit setpoint setting. The DHW high limit setpoint is unconfigured, so recheck the selected para…
Details
222
Unconfigured outlet high limit setpoint setting. The outlet high limit setpoint is unconfigured, so recheck the selected parameters and reve…
Details
223
Unconfigured stack limit setpoint setting. The stack limit setpoint is unconfigured, so recheck the selected parameters and reverify and res…
Details
224
Invalid DHW (Domestic Hot Water) demand source setting. The DHW demand source setting is invalid, so recheck the selected parameters and rev…
Details
225
Invalid flame threshold setting. The flame threshold setting is invalid, so recheck the selected parameters and reverify and reset the modul…
Details
226
Invalid outlet high limit setpoint setting. The outlet high limit setpoint setting is invalid, so recheck the selected parameters and reveri…
Details
227
Invalid DHW (Domestic Hot Water) high limit setpoint setting. The DHW high limit setpoint setting is invalid, so recheck the selected parame…
Details
228
Invalid stack limit setpoint setting. The stack limit setpoint setting is invalid, so recheck the selected parameters and reverify and reset…
Details
229
Invalid modulation output setting. The modulation output setting is invalid, so recheck the selected parameters and reverify and reset the m…
Details
230
Invalid CH (Central Heat) demand source setting. The CH demand source setting is invalid, so recheck the selected parameters and reverify an…
Details
231
Invalid Delta T limit delay setting. The Delta T limit delay setting is invalid, so recheck the selected parameters and reverify and reset t…
Details
232
Invalid pressure sensor type setting. The pressure sensor type setting is invalid, so recheck the selected parameters and reverify and reset…
Details
234
Invalid outlet high limit enable setting. The outlet high limit enable setting is invalid, so recheck the selected parameters and reverify a…
Details
235
Invalid outlet connector type setting. The outlet connector type setting is invalid, so recheck the selected parameters and reverify and res…
Details
236
Invalid inlet connector type setting. The inlet connector type setting is invalid, so recheck the selected parameters and reverify and reset…
Details
237
Invalid DHW (Domestic Hot Water) connector type setting. The DHW connector type setting is invalid, so recheck the selected parameters and r…
Details
238
Invalid stack connector type setting. The stack connector type setting is invalid, so recheck the selected parameters and reverify and reset…
Details
239
Invalid header connector type setting. The header connector type setting is invalid, so recheck the selected parameters and reverify and res…
Details
240
Invalid outdoor connector type setting. The outdoor connector type setting is invalid, so recheck the selected parameters and reverify and r…
Details
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Describe what the boiler is doing and get a straight answer about the next step.
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