Question about Heating & Cooling
My heater has been working fine for 40 years but recently when I ignite it fills with smoke, then lets out a bang and ignites. There is also a oil smell. Any thoughts. The heater is cleaned every year.
If you just changed gaskets on your heater it is normal for it smoke a little bit when you first restart it. It should go away after a while though. If you smell unburned fuel you have a leak somewhere, or a spill. Check all your fuel line connections in the house. The back of the heater where the line connects, the firestop valve (the valve behind the pump that opens or closes the flow of fuel), and any connections in there behind the pump/fuel resevior. (sp) Check that they are tight. What has also happened to me is fuel has spilt and ended up along the back edge of the stove. you might be able to be crafty and unscrew all the screws at the bottom, to try to clean that up. It doesn't take much of a spill to create a very pungeant diesel smell.
Posted on Dec 09, 2008
Flame rollout sensors, overheat thermistor, air proving switch, bad earthing, blocked flue. Any of these things can cause your problem. If its a permanent pilot, is it clean burning?? If electronic ignition, is the flame rod clean i.e. no carbon or rust etc.. Safest bet is a qualified gasfitter take a look at it.
Posted on Jul 19, 2009
I believe that model has a milivolt pilot generator. The possible causes of your problem could be a dirty pilot generator preventing it from providing the proper voltage to the gas valve or a defective gas valve. If you have a digital multimeter that will read mili volts, you can check the out put of the pilot by placing the leads on the two wires at the gas valve and reading the voltage. It should be 500-750 mili-volts. One other possibility could be one of the safeties have opened. They will be little button type snap disc limits with a button on the top. They will have a wire connected to each side. Push the button, if you hear a click, that safety has tripped. If you provide the exact model number I can post an exploded view for your use.
Posted on Sep 17, 2009
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