Valiant ecotec pro28

[DIY_Guy]

hello,

Have issues with my boiler in that central heating won’t work despite the thermostat temperature being increased.

All the lights on the sender and receiver work but the boiler doesn’t seem to work. Hot water works fine or when I press the + and - buttons on the boiler and the hat/ladder sign is displayed then central heating kicks in.

I suspect the sender is working fine but the receiver isn’t sending the signal to the boiler

See picture for details

 

[bazdaman]

Is there a radiator symbol on the boiler display when the stat is calling for heat? It's likely the reciever is not sending power back to the boiler, you can check s codes to confirm or use a multimeter on reciever

 

[DIY_Guy]

Is there a radiator symbol on the boiler display when the stat is calling for heat? It's likely the reciever is not sending power back to the boiler, you can check s codes to confirm or use a multimeter on reciever

Yep - you can hear the boiler doing something and then it goes all quite and no central heating

 

[DIY_Guy]

Yep - you can hear the boiler doing something and then it goes all quite and no central heating

Radiator symbol flashes.

 

[ianmcd]

The hat/ladder sign as you call it is chimney sweep mode and is for use by an engineer when working on the boiler, not advisable that you press it as it overides the boilers thermistors and the radiators will get very hot, it sounds like your salus receiver is faulty they are not the most reliable

 

[DIY_Guy]

The hat/ladder sign as you call it is chimney sweep mode and is for use by an engineer when working on the boiler, not advisable that you press it as it overides the boilers thermistors and the radiators will get very hot, it sounds like your salus receiver is faulty they are not the most reliable

Many thanks for the reply - will replace the unit and see if it corrects the problem

 

[HowMuch!!!]

You could short the wires together in the receiver that switch on the heating to test it before buying a new thermostat.

 

[DIY_Guy]

You could short the wires together in the receiver that switch on the heating to test it before buying a new thermostat.

Which wires would need connecting where?

 

[HowMuch!!!]

have you got the model number of the unit I can look it up.

 

[HowMuch!!!]

Which wires would need connecting where?

The receiver will have Live neutral and Earth, leave those alone and connect the NO and COM wire together if it is the same as the picture, if not, I need the model number. You should be able to get both wires in one connector for the test
.WARNING! Turn off the mains to it first before working on it.