Recent content by whitegold

Thanks for that - I will hook it up on the bell and postpone the panel swap for another occasion.

Challenger AP200 with remote keypad - all in otherwise good order BUT seems to have no strobe signal in alarm or test mode. New External sounder's Strobe can be triggered by pulling STR- down to 0VE/GND. In test mode the ST- terminal on the AP200 board indicates 0.65V which doesn't vary if...

I've just been trying to find replacement guide rollers for a bifold Shower Door; since 2 of the original 4 have failed. It seems extravagant to buy a whole new shower cabinet, instead of just these rollers. There's plenty of replacement Nylon outer race ball bearing rollers listed in the...

Tony, thanks for your reply. The temperature measurements refer to the points here on this sketched plan. I'm going to try lifting off the OH stat again and running it (strictly under surveillance, as you so rightly mention) until it either trips, or I get fed up with watching. Cheers...

Gordongas, & Pannierstan Thanks for the replies, I'm going to descale again, as I've been concerned about scaling / low flow in the Primary circuit, but I'm not sure that this is the core problem. Tony: 1. By direct observation of the Pilot flame, which dwindles and eventually fails...

Sorry, should have written "Primary Heat Exchanger", is clear. Have inspected the fins externally with pocket lamp and mirror. The boiler 1/3 & 2/3 control valves cycle according to DHW demand, and the primary circuit runs reasonably quietly & smoothly. Checking secondary Water/Water...

Return Filter is clear. CH section runs fine and as expected. It's actually only after a prolonged run on the DHW that the pilot fails.

Celtic FF 2.20 of 15 years vintage has recently developed an intermittent Pilot failure. Symptoms: Only after prolonged DHW usage, eg 10mins shower the pilot will sometimes extinguish. After the main burner shuts down, for the next 20-30 seconds, the pilot gradually fades, so TC cools until...