Heater

[Greenlee99]

heater not working have power and propane have power to 5 volt control circuit still no heat fan never comes on or anything no clicking like trying , nothing

[bmchoug]

Dave- Lets start with the fuses. Go to your 12v Panel and check the fuses. We will go from there. PM if you like. Get a MultiMeter and if you have 12v thru the fuses, lets move to the heater. What type and model do you have?

[Greenlee99]

thanks I have the suburban sf-35 with the dou=therm control center witch dose work roof top heat pumps also and is working . checked 12 volt panel and the 5 amp fuse at the furnace it's self both good

[blang]

I assume you're talking about the propane furnace. I'm not familiar with your specific model but this simple fix is certainly worth a look.

Check the sail switch. From the outside, remove the blower housing and, mounted on the inside, is a sail switch that needs to trip for the igniter to even try. Most common cause is dirty blower squirrel cage that does not get enough air moving. After cleaning the squirrel cage, blow the dirt out of the switch.

I'm no expert on this, just "been there, done that".

[blang]

Oops... edit added. Just noticed you said "no fan" so this probably won't help you but I'll leave it here anyway. Maybe it will help someone else in the future.

Originally Posted by blang

I assume you're talking about the propane furnace. I'm not familiar with your specific model but this simple fix is certainly worth a look.

Check the sail switch. From the outside, remove the blower housing and, mounted on the inside, is a sail switch that needs to trip for the igniter to even try. Most common cause is dirty blower squirrel cage that does not get enough air moving. After cleaning the squirrel cage, blow the dirt out of the switch.

I'm no expert on this, just "been there, done that".

[Greenlee99]

maybe it is I may have to do that remove unite and see if cage will turn maybe if hot turning it won't do anything else thanks for input

[Greenlee99]

Replaced whole Unite and works well now