Please help me with Honeywell receiver

[Biggzy]

Good evening

I have just joined today to hopefully get some help and be able to fix my problem with your expertise.

I will provide as much info as possible to avoid confusion.

I have a ideal Isar he24 boiler and this has a wireless thermostat dowstairs (cm61ng) , the receiver is r6660d I think (see image).

The problem I am having is that when I turn on the stat to call for heating it normally sends the signal to the receiver which in turn should light up with a green led, and then that should trigger the burner in the boiler ( by the way hot water from taps works fine and burner turns on for that ).

What is happening is that the led light comes on for a split second and turns off.
The burner also lights for this split second moment.

I have tried new batteries in the stat, removed PCB links and reattached, topped up water pressure, and checked if the wires in the receiver are loose or not.

Someone on another forum suggested I remove the black looped wire as this is a link for the wireless stat and if the boiler fires up without this wire, then the receiver is faulty. Is this true ?

Please advice what you think the problem could be as it was all working fine a few weeks ago, and suddenly stopped working after keeping the heating off for few weeks due to good weather.

Thankyou and hope this wasnt too much info to take in.

 

[Dan Robinson]

Someone on another forum suggested I remove the black looped

They're idiots.

What is the target and actual temperatures?

 

[Biggzy]

Sorry to sound stupid. What do you mean by target and actual temps ?

Current temp on stat is reading 23.5c. If I up it to let's say 25 , then the little wireless signal shows on the display, which in turn trigger the green led on the receiver upstairs but only for split second, regardless of how high I up the stat temp

 

[Echo the husky]

There is a good chance the receiver is faulty, possibly an aged dropper capacitor in the power supply for the receiver.

Target temp: what you have set the thermostat to.
Actual temp: the current room temperature.

 

[Biggzy]

Thankyou for explaining that.

Is there a way of for sure its the receiver that's faulty. Everything does seem to point to it.

If it turns out faulty for sure, then am I right in saying these have been replaced by the bdr91 model ?

ie: can it be wired without the wireless by using a loop anywhere in the receiver to test if CH works as few forums did mention its a way of testing it but not sure how.

 

[Echo the husky]

Press and release the grey button on the receiver, the green light should illuminate and the boiler should fire. It will shut off again after a couple of minutes. If the receiver behaves as it did before staying on for a split second it is faulty and needs to be replaced.

 

[Biggzy]

I have tried the grey button and the green led light comes on for split second and switches off, its the same whether I do this from the stat or the receiver itself

 

[Echo the husky]

New receiver time. Though this is an obsolete model and you should replace both the stat and receiver with the current version.

 

[Biggzy]

Is it possible to keep the stat and purchase the bdr91 receiver seeing as that is what it was replaced with ? Will I be able to pair it up with the new receiver ?

 

[Dan Robinson]

Is it possible to keep the stat and purchase the bdr91 receiver seeing as that is what it was replaced with ? Will I be able to pair it up with the new receiver ?

Pretty sure not.

 

[Biggzy]

The bdr91 receiver on eBay sells for £20 and says it's compatible with cm61ng model so I'm.guessing it would be ok.

Also is there nothing possible to eliminate if receiver is faulty or not ? Are you informed on whether the wiring in the receiver can be over ridden to make the boiler work without the receiver ?

 

[Echo the husky]

Simply joining the wire in terminal A to the wire in terminal B will make the heating come on permanently. Also you should switch the electric supply off if the receiver is not fitted in place! Safety first and all that...

Edited to correct mistake.

 

[Biggzy]

Simply joining the wire in terminal C to the wire in terminal B will make the heating come on permanently. Also you should switch the electric supply off if the receiver is not fitted in place! Safety first and all that...

Thanks Echo, but there is no wire in C. The wires are in A and B. Please see the image.
A has a black looped wire coming from the second L and B has white wire in it.

Are you still correct in that I need to add another loop from B to C or will it be from A to B ?

 

[Echo the husky]

No extra loops, join a + b, I missed the blank terminal.

 

[Biggzy]

Ok thanks I will.do this tomorrow and report back. Thanks for your patience with me and good evening.

Am I putting wire in A and taking it over to B ?