Weil-McLain Simplicity 60F > RETURN — Boiler Out Temperature More Than 60° F Above Boiler in Temperature
60F > RETURN
Boiler Out temperature more than 60° F above Boiler In temperature. Boiler Out temperatures were greater than the Boiler In temperature by more than 60° F, or the burner had been on for less than 2 minutes. The table classifies it as The first time a lockout occurs, the time to clear is 2 minutes 30 seconds. The second time a lockout occurs it's a 3 minutes 30 second lockout. The third time, its 4 minutes 30 seconds, the fourth time its 5 minutes 30 seconds. The fifth time its 6 minutes 30 seconds. The system will retry, indefinitely, every 6 minutes 30 seconds as long as the temperatures return to being < 60 degrees. If the burner first for at least 2 minutes without the temperature difference exceeding 60 degrees, the time condition for the > 60 degree soft lockout is reset back to the minimum value of 2 minutes 30 seconds..
Applies to
This fault code is displayed by the Simplicity control (display messages) on Simplicity models (110, 150, 199), as documented in Simplicity Boiler Manual, doc 550-143-073/0125 (550-143-073/0125). Codes can differ between controller generations, so always check the manual that matches your unit.
- Weil-McLain Simplicity
- Weil-McLain Simplicity 110-C
- Weil-McLain Simplicity 150-C
- Weil-McLain Simplicity 199-C
Controller: Simplicity control (display messages). Source manual: 550-143-073/0125 (2025-01).
Why a code is not a diagnosis
The code reports the condition the control detected; the underlying cause must be confirmed on site by a licensed technician using the manufacturer's procedure.
Safe things to observe
- Note the exact code, when it appears and what the appliance was doing.
- If the appliance has stopped, call a technician rather than repeatedly restarting it.
- If you smell gas, stop, go outside and call your gas utility's emergency line or 911 before anything else.
Do not
- Do not ignore a code that returns after a reset.
How professional service helps
- A licensed technician diagnoses the cause with the manufacturer's test procedure.
- 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.
Parts and service
Parts commonly involved
These parts appear in the documented text for this alert. A code reports a condition, not a failed part — a technician confirms the cause by testing before anything is replaced.
Burner assembly
The burner assembly is where gas and air meet and burn inside a boiler, and its condition decides whether combustion is clean or makes carbon…
What a technician checks →
Service for this alert
- Gas Boiler Repair
Licensed gas technicians from ROMA Heating & Cooling diagnose and repair residential and light-commercial gas boilers across…
- Emergency Boiler Repair
Priority gas boiler repair for homes and buildings in Greater Vancouver with no heat, no hot water, a locked-out boiler or a leak.
Every boiler part explained — what it does, how it fails and what a technician checks.
Documented for Weil-McLain Simplicity.
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
- Simplicity Boiler Manual, doc 550-143-073/0125 · 550-143-073/0125 · accessed September 7, 2026
Facts checked September 7, 2026. Last updated September 7, 2026. Technical reviewer: not yet assigned.