[schreib]

I misplace the wiring diagram and installation manual for my Amana Furnace. Any chance someone, website may have a good source for that:

Mod # GUCO70B40A, Serial # 9110104173, Mfg # P9114303F

Suggestions for a fix would be appreciated also:
Having problems starting. The igniter works fine if the sequence ever reaches that point but it fails early. The inducer blower starts up for a second or two and immediately shuts down. The furnace keeps trying to light but it keeps killing the inducer motor.. . NO red LED on the main ignition controller.

Jumping the red and white wires on the thermostat relay keeps the furnace running, no problem. Of course, it won't shut off without removing the jumper. Basically, this sounds like the thermostat is bad. However, I installed a new one and the same thing happens.. . Unless I jumper the relay! Hmmm.

I REALLY need the diagram. Manual would be great too.

Thanks for any help you can provide!

Brian

[storey566]

Hey man, you should try replacing the t-stat wire, it sounds like the furnace is not receiving the call for heat from t-stat consistently. If you have replaced t-stat and furnace works when jumped at relay the your t-stat wire is bad. Good luck, I hope that wire isn't wrapped around a nail.

[schreib]

I misplace the wiring diagram and installation manual for my Amana Furnace. Any chance someone, website may have a good source for that:

Mod # GUCO70B40A, Serial # 9110104173, Mfg # P9114303F

Suggestions for a fix would be appreciated also:
Having problems starting. The igniter works fine if the sequence ever reaches that point but it fails early. The inducer blower starts up for a second or two and immediately shuts down. The furnace keeps trying to light but it keeps killing the inducer motor . . . NO red LED on the main ignition controller.

Jumping the red and white wires on the thermostat relay keeps the furnace running, no problem. Of course, it won't shut off without removing the jumper. Basically, this sounds like the thermostat is bad. However, I installed a new one and the same thing happens. . . unless I jumper the relay! hmmm.

I REALLY need the diagram. Manual would be great too.

Thanks for any help you can provide!

Brian

Uh, did you note my question was nearly two years ago.. . Anyway, I solved the problem, found the diagram and realized the "professional" installer installed an "isolating" relay in addition to the already existing starter relay. When HIS relay failed it mucked up the system. I removed his relay, everything is fine. Let me tell you, I told the tech he should not be doing that without authorization from Amana.