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I have a Tappon furnace DGUF 106 02 EF Serial 77D18453 The unit has an intermittent problem, It will cycle at will, thermostat is good I can sometimes get it to come on by heating the unit above the control valve(the one with the spark plug wire looking wire from the bottom) OR cycling the main valve removing the Yellow wire several times. this is not working well now . any Ideas?? Thanks Ted

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6 Suggested Answers

6ya6ya
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SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

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Master_Tech
  • 770 Answers

SOURCE: Room AC, reverse cycle..heat does not work.

if it is a Heat pump style the rev valve is in the Freon lines you will have to pull the unit out into the room out of it's sleeve which will stay in the wall ....it rev the flow of refrigerant is it cooling ok?? there is a solenoid on that valve that may be bad i would check that first you will have to look to see if it is energized in the heat or cool mode first to make sure it is switching it should look like a sideways tube with 3 outlets on one side and 1 inlet on the top and the solenoid coil as well with 2 wires going to it let me know what you find out ...1 Note the unit may have electric heat and the element maybe out you will have to pull to check

Posted on Jan 24, 2008

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chillmaster
  • 104 Answers

SOURCE: Manual Thermostat replcaement with Programmable Digital unit.

Hopefully there are markings on the old t-stat as to what terminal is what.
on the honeywell 8000 use the heat pump labeling and then the standard wiring would be
R- red
AUX-white
Y- yellow
B- O/B
C- black
G- green
There should not be a bare wire, it probably just has the insulation stripped back way too far.
You should probably open the furnace and compare the terminal label in the furnace to the wire color. normally yellow and blue pass through the furnace and are wire nutted to wires going to the outdoor unit. In the furnace the white wire will connect to the w or w1 terminal. also, you will need to set the Honeywell stat to have the following parameters.
170-7
190-1
200-0
other parameters that I did not specify, you may read the manual and make your own decision but I recommend factory settings for the other parameters

Posted on Jun 18, 2008

jumptrout51
  • 3361 Answers

SOURCE: I have a Consolidated Industries gas furnace,

The digital thermostat must be programmed for GAS heat.
If the problem occured before the t-stat change and is still happening, the problem would be with ignition within the furnace.

Posted on Mar 15, 2009

  • 16 Answers

SOURCE: Goodman forced air gas furnace not firing

if your power vent moter is not running you should not have have glowing ignitor.Frist the vent moter must close an air prove switch in series with the idnitor .seems you have a stuck air prove switch.Its the one with a hose attached

Posted on Apr 07, 2009

motor1258
  • 6674 Answers

SOURCE: I have a DuoTherm BriskAIr 13.5K BTU. The Dometic

If you look at control box at roof unit, they usually use a separate set of wires for furnace. See what colors they are attached to at harness to thermostat. Some just follow other harness, and come out at thermostat. (bypass control box) Once you've determined which 2 they are, join them together & see if furnace starts, as it should. If it does, thermostat is faulty. If not, pull outside cover off & check voltages at furnace. I'm guessing by furnace model that your unit is approx 30 ft , but if it's a park model, you may have 24 volt system on furnace or 12 volt. Another way of confirming is to go to back of furnace where air intake grille is inside your unit, and locate 2 blue wires going to furnace & remove whatever wires are attached to them & connect them together. Furnace should start up.

Posted on Jul 08, 2009

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