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Laars mascot 2


I have a problem with a laars mascot 2 combi boiler. It seems to not want to fire when there is a call for hot water. The spark ignitor works but the gas does not come on. There is an error code of 173 and 174 that keeps coming up but I don't see any type

of answer for it in the Manuel. Any help would be great.



  • caspercasper Member Posts: 1

    172Main relay feedback incorrectInternal Fault. 173Pilot relay feedback incorrect. 174Safety relay feedback incorrect. 1. Reset Module. 2. If fault repeats, replace module. The codes yuor getting are from the honeywell control which has it own code.
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