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- 1 Apr 2008
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Hi, Yesterday my CH failed, The central heating was on but because it was a nice day not hot, firstly i noticed the hot water was very hot mid afternoon and it should not be, later in the evening it was cold radiators. The first thing i jumped for was the pump as it had been noisy for some time so i replaced it but not end of problem.
My system is Glowworm ultimate, Siemens programmer, 3 port motorised valve, fully pumped, room stat (was) acl drayton 3 wires yellow red blue, I have since changed that for Honeywell T6360 but not sure of wiring. The pump runs on hot water but not CH. if I push the MV right over and hold it there whilst programmer is on HW the radiators get hot. The boiler fires ok. Can anyone assist me. regards Mick
My system is Glowworm ultimate, Siemens programmer, 3 port motorised valve, fully pumped, room stat (was) acl drayton 3 wires yellow red blue, I have since changed that for Honeywell T6360 but not sure of wiring. The pump runs on hot water but not CH. if I push the MV right over and hold it there whilst programmer is on HW the radiators get hot. The boiler fires ok. Can anyone assist me. regards Mick