I've got two problems with my boiiler:
1) Shower goes from hot to cold and back again rather than staying stable (argggggggggh). This happens intermittently. (Everything was previously OK for years; the Quartz processor is the correct one).
2) Wireless digistat thermostat and receiver board on boiler randomly losing synch - the red 'signal' light illuminates steady to indicate loss of comms link atfer a seemingly random period of time.
Re (1) - I have dialed the DHW temp to min, and this (usually) fixes the problem... but what's causing it, and can I fix it permanently so the Quartz processor doesn't do this oscillation game ? Sometimes a shower will be fine, and sometimes it won't. The wife ain't too impressed, I can tell you ! (We have two Quartz units - they are both doing this - and I doubt they have failed at the same time. I have tested the DHW temps off the boiler when the knob is on min and max and (at least when I tested) I got the correct 50 and 60 degrees at both 1/4 and full flow).
A WB engineer replaced the air switch, PRV and EV and this seemed to fix the problem for a few months, but as it has occured again I am not sure this actually cured things...
I replaced the PCB prior to calling WB out (I thought it was causing the faults). Erm... it wasn't.
Re (2) The boiler can be fine four hours, heating the house nicely, and then (seemingly for no reason) the heating will cease responding to the 'stats heating demand. Often we go to bed cosy but wake up cold... Can you tell I'm getting an earful ?
(I have to hit '-' or '+' to attempt to 'wake up' the system when this happens, or else power down the boiler or else remove the battery trays and do a 'Learn' operation etc. etc.). I have inserted new batteries to no avail. This occurs whether the transmitter is 1 or 5 metres from the boiler. They are correctly paired.
Dazed and confused. Any ideas, guys ?
1) Shower goes from hot to cold and back again rather than staying stable (argggggggggh). This happens intermittently. (Everything was previously OK for years; the Quartz processor is the correct one).
2) Wireless digistat thermostat and receiver board on boiler randomly losing synch - the red 'signal' light illuminates steady to indicate loss of comms link atfer a seemingly random period of time.
Re (1) - I have dialed the DHW temp to min, and this (usually) fixes the problem... but what's causing it, and can I fix it permanently so the Quartz processor doesn't do this oscillation game ? Sometimes a shower will be fine, and sometimes it won't. The wife ain't too impressed, I can tell you ! (We have two Quartz units - they are both doing this - and I doubt they have failed at the same time. I have tested the DHW temps off the boiler when the knob is on min and max and (at least when I tested) I got the correct 50 and 60 degrees at both 1/4 and full flow).
A WB engineer replaced the air switch, PRV and EV and this seemed to fix the problem for a few months, but as it has occured again I am not sure this actually cured things...
I replaced the PCB prior to calling WB out (I thought it was causing the faults). Erm... it wasn't.
Re (2) The boiler can be fine four hours, heating the house nicely, and then (seemingly for no reason) the heating will cease responding to the 'stats heating demand. Often we go to bed cosy but wake up cold... Can you tell I'm getting an earful ?
(I have to hit '-' or '+' to attempt to 'wake up' the system when this happens, or else power down the boiler or else remove the battery trays and do a 'Learn' operation etc. etc.). I have inserted new batteries to no avail. This occurs whether the transmitter is 1 or 5 metres from the boiler. They are correctly paired.
Dazed and confused. Any ideas, guys ?