What needs to be done to fix a code 20 "twinning fault" on my rheem furnace

SOURCE: No heat from unit. Hear ignitors start but no airflow in house

well i need to know if the fan comes on at all if not then it could be a bad motor or board which is not uncommon but if the fan does come on and then flames go out and fan stays running could be high limit check to make sure in the bower compartment there are no wires disconnected from the blower sometimes when changing the filter it is possible to knock the wire off the board

Posted on May 19, 2009

SOURCE: I have a goodman furnace and ac unit the fan and

Look at the contactor on the condensing unit, remove the low voltage wires to the contactor and turn on the system. If the low voltage fuse doesn't blow, replace the contactor.

Posted on Jul 07, 2009

SOURCE: rg(bu)h-07eauer have replaced the control board will not heat

read wiring and make sure flame sensor is clean and make sure you have good ground

Posted on Oct 17, 2009

Chandler Ede

• 1420 Answers

SOURCE: 5 amp fuse continues to blow on control board for

You have a short on the 24 volt side of the unit. Check the thermostat wire for signs of pinching or direct short.

Posted on Oct 17, 2009

SOURCE: I have a suburban lp furnace and duotherm air/heat

I'm not sure what the problem may be but you could try calling All Seasons RV Appliance Parts & Service. There number is 1-800-344-0673 they have helped me in the past. That and there tech calls are free so it wouldn't hurt to give them a call.

Posted on Feb 16, 2010