Question about Honeywell Programmable Thermostat Heater
My boiler has a blank display when there is no demand i run ch it goes to c and hot water it goes to d but when in stand by nothing when it should be a 0
May just be a defective display PCB, byt more often than not, its the more expensive main primary PCB. Ideal actualy modified this PCB, and has a pre-fix of VF on it, and is orange in colour
Posted on Mar 03, 2009
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Posted on Jan 02, 2017
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