Sterling heater won't stay running.
If the diagnostic lights say the pressure switch is not making, that doesn't mean the pressure switch has to be bad. The first thing I would look for before condemning the pressure switch is to check your exhaust venting for any restrictions. Has the termination cap(cap on the end of the chimney) fallen off and possibly a bird or whatever has built a nest in the chimney? I have ran into this multiple times in my service business. If your venting is not restricted in any way then I would check the small rubber tubing that comes off the pressure switch. Remove the tubing from the switch and try to blow thru it to see if it is plugged( whatever you do don't blow into the pressure switch as the diaphram inside it is delicate and you could ruin the switch). If you can't blow thru it then most likely the connection on the other end of the tubing is restricted. You should be able to clear the restriction wlth a small gauge piece of wire or a small drill bit. And yes you don't want to bypass the pressure switch as it is a safety for the unit. Look at these things first before you try replacing the pressure switch. Good Luck!!
Dec 04, 2009 |
Sterling RF30 Natural Gas Garage Heater