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-   -   ducane furnace model cmpb100caa does nothing, light on gas valve indicates all ok (http://www.diychatroom.com/f17/ducane-furnace-model-cmpb100caa-does-nothing-light-gas-valve-indicates-all-ok-85436/)

daveandoliver 10-31-2010 08:31 PM

ducane furnace model cmpb100caa does nothing, light on gas valve indicates all ok
 
ducane furnace model cmpb100caa does nothing. Any ideas?

kenmac 10-31-2010 09:44 PM

Smart valve ?

daveandoliver 11-02-2010 08:49 AM

getting cold
 
still need help asap hi:limits are all closed.air switch is closed and will open when you blow into hose.door switch is working ok.there is 120v at transformer terminals on board and 24v at t-stat terminals.light is flashing on gas valve there is no fault lights on board.could board be bad.any recomendations?

kenmac 11-02-2010 01:55 PM

Your unit may have smart valve



http://www.transtaracsupply.com/pdf/sv95control.pdf

beenthere 11-02-2010 07:40 PM

The pressure switch is closed without the inducer running?

daveandoliver 11-06-2010 08:36 AM

ducane
 
Thanks for help.Retested all componets again and again"about to give up but finaly found short in t-stat wires.Replaced wires then found board bad.Replaced board and unit is working ok now.


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