ducane furnace model cmpb100caa does nothing, light on gas valve indicates all ok

daveandoliver · 10-31-2010, 09:31 PM

ducane furnace model cmpb100caa does nothing. Any ideas?

kenmac · 10-31-2010, 10:44 PM

Smart valve ?

daveandoliver · 11-02-2010, 09:49 AM

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, 02:55 PM

Your unit may have smart valve

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

**beenthere** · 11-02-2010, 08:40 PM

The pressure switch is closed without the inducer running?

daveandoliver · 11-06-2010, 09:36 AM

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.

10-31-2010, 09:31 PM	#1
daveandoliver Newbie Join Date: Oct 2010 Posts: 3	ducane furnace model cmpb100caa does nothing, light on gas valve indicates all ok ducane furnace model cmpb100caa does nothing. Any ideas?

10-31-2010, 10:44 PM	#2
kenmac HVAC / Plumbing Join Date: Feb 2009 Posts: 1,801	ducane furnace model cmpb100caa does nothing, light on gas valve indicates all ok Smart valve ?

11-02-2010, 09:49 AM	#3
daveandoliver Newbie Join Date: Oct 2010 Posts: 3	ducane furnace model cmpb100caa does nothing, light on gas valve indicates all ok 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? Last edited by daveandoliver; 11-02-2010 at 02:02 PM.

11-02-2010, 02:55 PM	#4
kenmac HVAC / Plumbing Join Date: Feb 2009 Posts: 1,801	ducane furnace model cmpb100caa does nothing, light on gas valve indicates all ok Your unit may have smart valve http://www.transtaracsupply.com/pdf/sv95control.pdf

11-02-2010, 08:40 PM	#5
beenthere An old Tradesmen Join Date: Oct 2008 Location: PA Posts: 19,045	ducane furnace model cmpb100caa does nothing, light on gas valve indicates all ok The pressure switch is closed without the inducer running?

ducane furnace model cmpb100caa does nothing, light on gas valve indicates all ok