Tuesday night my boiler stopped firing up for hot water, but central heating was fine. None of the warning LEDS were flashing. Had an engineer out last night and he wants to replace the diverter valve. This morning, i have lovely hot water again despite no work being carried out, but the warning LED for fault on DHW sensor is flashing, but I have hot water? Any suggestions before I pay out to replace an expensive part?
Help! Heatline c24/c28 combi probs
- Thread starter MIffedMike1
- Start date
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in the event of the hot water temperature sensor(dhw ntc) failing the boiler with still fire for hot water but the boiler will work of the CH/primary temp sensor.
basicly it will limit the temp of the primary/ch side to 60c, so if you have below spec flow rate and/or warmish inlet cold temp. you could get good hot water but with the dhw ntc not working at all.
most likely there is nothing wrong with your DV valve(if it is not leaking) and all you need is a new dhw ntc.
if you have you manual it is one of the features of your boiler to tey and still work with a bad DHW ntc.
basicly it will limit the temp of the primary/ch side to 60c, so if you have below spec flow rate and/or warmish inlet cold temp. you could get good hot water but with the dhw ntc not working at all.
most likely there is nothing wrong with your DV valve(if it is not leaking) and all you need is a new dhw ntc.
if you have you manual it is one of the features of your boiler to tey and still work with a bad DHW ntc.
It sounds as if your engineer was a nupty who cannot diagnose even simple faults!
However, I think that sensor has to be checked with a spare plug and lead unless you have bent test probes and a dentist mirror with a magnet.
Its often quicker to take it out!
Or am I confusing the DHW with the CH sensor locations?
Tony
However, I think that sensor has to be checked with a spare plug and lead unless you have bent test probes and a dentist mirror with a magnet.
Its often quicker to take it out!
Or am I confusing the DHW with the CH sensor locations?
Tony
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Well the good news is I still have hot water, but the engineer called up to say his company no longer supply the part he thought it was so have just paid £60 for him to come out and possibly mis-diagnose it! I am loathe to use the same company again.................. Will be leafing through the yellow pages methinks!!
I hope you dont change the APS on a Biasi M96 just because the PCB tells you that its faulty!
Tony
Anyone Northants way (East) fancy fixing this for me? Not too keen to get mugged off by another "Big" company who may or may not fix the problem!!
Tis 3 years old, will try heatline again but were having 'technical difficulties' with phones today and couldnt get through!! Thanks for all the advice tho guys!
You would have thought that they had quite enough "technical difficulties" with their boilers!
Could it possibly be an excuse to slope off early for Easter?
Skeptic
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