Top 20 All-Pro SPC-30 Heater Questions & Answers

My guess would be a bad thermocouple!!!

Hi,
I have been tryingto solve this same problem for several years. In the mean time, I use a brick (or two) to hold the "Fuel" button in.

if safety cicuit is ok check to see if voltage to ignitor if yes but doesnt glow replace

Its the thermacouple. It's a peice that senses the heater is lit and keeps the gas valve open. They are fairly cheap to replace.

You might have a bad or dirty flame sensor.
Take it out and clean with sandpaper.

Your gas pressure is regulated by the gas valve .You will need a special tool to check gas pressure on the gas valve .
Make sure burners are clean ,filters and blower wheel .
A lot of time dust settle on blower wheel and make it harder to spin causing reduction on air movement

Is the fuel tank cap vent clear? Are you sure there's no water in fuel tank? don-ohio

Check filter is clean on tank

no, there is something faulty

If gas is being supplied to the heater without problems but it isn't getting through to the burner it could be a safety device problem. There is generally a gas cut-out valve that is operated by a thermocouple. This is often in assembly with the main gas control and usually the control has to be pushed in or turned beyond maximum to over-ride the safety cut-out for starting purposes. Once the gas jet is burning the thermocouple rapidly warms up and the main gas supply is switched on the control knob can be released. Disconnecting the output from the valve would indicate whether the valve is faulty or the jet is blocked. If no gas is passing through the valve there could be a fine gauze filter in the inlet that is blocked. I hope this helps.

If you have replaced the thermocoupler and it still wont stay lit then replace the gas valve.

If you have a thermocouple and standing pilot as described the gas cannot flow full to the burners with the gas valve button depressed because the position of the gas valve to allow the button to be depressed is not in the 'on' position....its in the 'pilot' position. Are you sure you cleaned the 'thermocouple' and not just a 'spark ignition electrode' ?? One with spark ignition will not have a gas valve that has a pilot position.... Kinda confusing and conflicting data to sort through ..... Hmmmm.... If you have the spark ignition style, the problem COULD be in the 'flame rectification' circuit. IF it has the ignition electrode, the other side of the furnace will contain the 'flame sensor' that senses the flame and completes the ground circuit of the electronic module through the flame. Its not doing it, so either it is oxidized up inhibiting its ability to conduct electricity through the flame or there is residual oxidation within some of the terminal connections of the ground circuit. IF what you have is the 'standing pilot', the first suggestion is to replace the thermocouple. A more remote possibility is the gas valve has a defective safety coil that drops out when you release the pilot button.

If it's propane it's possible the valve on the tank is bad..if it's natural gas start with the thermocouple

Hi Murray, try this link I've used it many times before to find user manuals for products I've lost or for example, I just moved in to a new home but the sellers didn't have any of the op manuals for water softener/ alarm system, garage door opener, etc.... www.manualsonline.com hope it helps!

TURN OFF ! DO NOT USE!! SOUNDS LIKE CARBINE MONOXIDE. CAN KILL YA. HAVE EXPERT LOOK AT IT

Either the Thermocouple is loose from the control valve; The Thermocouple, if it's a stand-a-lone type has a lacquered finish on it from the propane and needs cleaning. Or, you're not fully depressing the control valve when it's in the pilot position, when you're trying to light it. Once the pilot lights, the knob should be held in for at least a minute, to allow the Thermocouple to thoroughly heat up.

I recommend that you thoroughly clean the unit, before attempt light if again or trouble shooting it.

check out the presure switch could be blocked, or try jumping it ou to see if it lights , check flame sencor is clean

Your fishing take it to service center who has test eguipment to check it out right. Does it burn all right with the cover off?? If it same then it is your eye. Make sure your using the right photo cell. kEN'S REPAIR.