Honeywell HC60NG Clicking Straight Back Off

[Bobthebuilder95]

Evening all

Merry Christmas all, our heating system isn't quite so festive and has decided to let us down today.

It has a wireless honeywell stat paired with a Honeywell HC60NG receiver. When you adjust the thermostat the receiver relay clicks and goes green as it should. However after 1second or so it clicks again and quickly flashes red then off.

Even if you manually press the button the same thing happens the relay clicks open then straight back off.

Tried re-pairing, turning the power off and on, checks all the wires for any loose connections but no lick.

Any advise appreciated!

Rob

 

[ianmcd]

Turn the power off, remove the front and put the wire in B into the wire with A and the stat is by-passed, will give you heating but you will have to turn it off at the boiler when you dont want it, will give you some time to decide what you are going to replace it with

 

[Bobthebuilder95]

Turn the power off, remove the front and put the wire in B into the wire with A and the stat is by-passed, will give you heating but you will have to turn it off at the boiler when you dont want it, will give you some time to decide what you are going to replace it with

Thanks will do that for now, just need to decide whether to replace like for like for 50 quid or just bite the bullet and go for a Nest at £160.

Have a good Christmas !

 

[Majkic]

Just a quick follow-up, probably too late to help Bobthebuilder95 but in case others land here with the same problem. The cause of this problem is almost certainly the failure of a capacitor within the HC60NG which provides its internal low voltage electronic circuitry with power from the incoming mains supply. This is done via a 0.68uF 250V AC capacitor on the printed circuit board; these seem to lose capacitance over time, with the result that there's enough internal low voltage power to allow the relay to receive signals and light the LED's, but when it receives the ON command and tries to operate the electromechanical relay which closes the heating circuit contacts, the low voltage power to the electronics collapses in voltage and the thing shuts down. The circuitry no longer draws much power, if any, and so the power supply inside recovers, the thing starts to receive signals again and the cycle repeats. The remedy is to replace that capacitor; you can find them on eBay or from suppliers like CPC, RS or Farnell. Cost - about 50p each! You have to remove the circuit board but that's easily done, and all you need is a moderately small soldering iron to replace the thing. Just be sure to use a capacitor that's fully rated to carry mains on a permanent bsis - this means a "Class X" or "Class X2" capacitor MUST be used for fair safety's sake. But otherwise dead easy repair, and vastly cheaper than a replacement relay or worse!