Question about Honeywell Programmable Thermostat Heater
I have a two zone thermal control on my boiler one s a honeywell cm61 and the other is a honeywell r6660d. I believe the r6660d is the base unit recieving a radio signal from the cm61 as it is wired to the boiler. I now have both the green LED and the red LED showing. why has the red LED come on and what does it signify?
The problem is that the 2 units are "not speaking to each other". this could be caused by low batteries or a loss in signal caused by a powercut or an objection in the way of the 2 units.
first you need to turn the power off to the r666od (or otherwise known as the HC60NG) for 10 secs, then turn back on. then hold the grey button in for 15 secs. release then hold in for a further 5 secs.
go to the honeywell cm61 press the off button. hold temp up. temp down and prog 1 in for 3 secs until the dipslay goes to INST. at this point release all 3 buttons then press the i button until a beacon starts flashing.
this is now the end to your problem.
N.B the reason the green light was on is because the man override button will have been pressed.
hope this helps
Posted on Feb 11, 2009
It's work, thank very much
Posted on Sep 28, 2012
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Posted on Jan 02, 2017
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