When the boiler is operating with the thermostat . set at 77C the boiler individual comes on for about 1.5 mins next stays off for 2+mins. This like for heat and dampen.
Also Room thermostat Terrier TRT1W when set to say 17c the room warm up to 20c before it turns sour then doesn't come on again until temp is below setting IE: 15c.
Any Ideas Please.
Answers: It sounds approaching you have one of two problems. Either the warmth sensor in the boiler is going discouraging or you are not getting enough dampen flow. The water flow could be cause by air surrounded by the system or the pump could be going bad.
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