Patterson-Kelley · Error codes
Patterson-Kelley 10185 — Cant Write Modbusheartbeattimeout
10185
cant write MODBUSHEARTBEATTIMEOUT. Settings is set to an invalid selection. Please Change this value to Setpoint or None. The table classifies it as Hold (H).
Applies to
This communication or network fault code is displayed by the NURO touchscreen control with Sola burner control on MODU-FIRE FD (N750–N3000) and THERMIFIC VELOX (N750–N2000) appliances equipped with the NURO touchscreen control, as documented in NURO Advanced User's Guide, doc 1004905979 Rev G (March 2016), Appendix C Error Reference Table (1004905979 Rev G). Codes can differ between controller generations, so always check the manual that matches your unit.
- Patterson-Kelley P-K MODU-FIRE FD
- Patterson-Kelley P-K THERMIFIC VELOX
- P-K MODU-FIRE FD N750
- P-K MODU-FIRE FD N1000
- P-K MODU-FIRE FD N1500
- P-K MODU-FIRE FD N2000
- P-K MODU-FIRE FD N2500
- P-K MODU-FIRE FD N3000
- P-K THERMIFIC VELOX N750
- P-K THERMIFIC VELOX N1000
- P-K THERMIFIC VELOX N1500
- P-K THERMIFIC VELOX N1700
- P-K THERMIFIC VELOX N2000
Controller: NURO touchscreen control with Sola burner control. Source manual: 1004905979 Rev G (2016-03).
Why a code is not a diagnosis
A communication code involves the link between controls (cascade, remote, sensors on a bus). Another unit being off, a wiring fault or an address conflict can all produce it.
Safe things to observe
- Check that every appliance in a multi-unit plant has power.
- Report the code together with any other codes on the system.
Do not
- Do not re-address or rewire control networks yourself.
How professional service helps
- A technician verifies power, wiring and settings across the connected units.
- Combustion and safety devices are verified with an analyser and the manufacturer's procedure after any repair.
Where ROMA provides on-site service
On-site service is currently offered in Greater Vancouver, BC, including Vancouver, Burnaby, Richmond, Surrey, Coquitlam, North Vancouver, West Vancouver, New Westminster, Port Coquitlam, Port Moody, Delta, Langley, Maple Ridge, Abbotsford, Chilliwack, White Rock, Pitt Meadows, Tsawwassen, Anmore, Lions Bay, Belcarra, Bowen Island, Mission. Everything else on this site is reference information you can use anywhere in Canada.
Frequently asked questions
Can I clear this code myself?
Clearing a code without fixing its cause usually just brings it back. Note the code, check the safe items on this page, then call a licensed technician. If your appliance manual describes a user reset for this exact code and it stays away, no call may be needed.
Boiler locked out? Call with the alert text ready.
The brand, model and this alert are passed along when you request service online, so the technician arrives prepared.
On-site service in Greater Vancouver, BC. ROMA lists “Open 7 days” on its site; call to confirm same-day availability.
Sources and verification
- NURO Advanced User's Guide, doc 1004905979 Rev G (March 2016), Appendix C Error Reference Table · 1004905979 Rev G · accessed September 9, 2026
Facts checked September 9, 2026. Last updated September 9, 2026. Technical reviewer: not yet assigned.