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Have a colombus 385bh and furnace just clicks and dnt fire. Also unit 2 when I put it auto doesn't even come on what could possibly be the problem

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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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johnsonr1
  • 91 Answers

SOURCE: Not firing. usually clicking sound until gas fires up.

If the unit has power, then not likely a bad breaker. The clicking sound you hear is the spark ignitor lighting the pilot. If you no longer hear this noise, the most likely cause is the spark control box, about 3 inches wide, 6 inches tall with wires connected to it.
If you provide the model number of the heater, I can send you a troubleshooting chart to determine if the spark control is bad or possibly a themostat or internal safety.

Posted on Aug 22, 2009

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We are having an issue with our furnace. It reaches temperature, clicks off, clicks back on, clicks off. It happens intermittently. We can't tell if the problem in with the furnace or the thermostat.


An intermittent problem can take patience and time. Process of elimination too. If you are unfamiliar with servicing and repairing a gas furnace, you may want to leave that chore to a professional. Now, what exactly is coming back on after the set temp is reached? Blower only or is it firing the furnace also. My experience says it's just the blower. This is caused by... Furnace overheating, then shutting down, then bringing blower on to cool it down. Probably not your scenario. It's possible the control board is acting up. Highly possible that you have a high temp limit with a loose connection, or needs to be replaced. Schematic will call it HS or LS, something like that and it should have 2-6 of em. Possible that the G wire from the t-stat is shorting to R, and bringing the fan on. Try posting more info? Model & serial number. Fan cycling or furnace? Have you checked new t-stat installer configuration? Hope this helps! And work safe

Oct 31, 2017 | Heating & Cooling

1 Answer

Rv furnace stopped working


Quick call the installer to see if it is still under warranty. There is something wrong if the motor is being replaced every other year. Most of the motors should be lubed with fan turbine oil and not 3 in 1, nor detergent containing oils. If the wrong oil is used, the bearings will go south in 1 to 2 years.

Nov 23, 2013 | Heating & Cooling

1 Answer

I have an oil fired aga the oil will not come throw to the burner


see the following steps:
f the burner doesn't run, set the thermostat a few degrees higher than normal to see if it comes on. If it still doesn't come on, check switches, and breakers and fuses (see the Electrical Service Panel Fix-It Guide). If the unit has a reset button, press it. Also oil the motor at any oil ports (see below). If the unit doesn't want to start and run, first check the c to make sure that the ignition is getting power. If there is power, check the built-in safety controls (see below) that may turn the system off if they perceive problems.
If the burner cycles too often, replace the filter (see below). Also, oil and adjust the blower (see the Forced-Air Distribution Fix-It Guide).
If the burner runs but won't fire, make sure the oil valves are open and that there's oil in the tank. Check the tank level with a clean stick.
If the burner smokes or squeals, shut off the unit, let it cool, and fill the oil cups. Recheck them after the motor has run for an hour.
If the chimney smokes even after the flue has warmed up, the unit is wasting fuel; call for professional repair.
Safety Controls
Oil furnaces and other heat systems include safety devices that monitor operation and turn off the unit if something goes wrong. In some cases, the safety device can be the problem.
If you encounter an operating problem with an oil furnace, first reset the safety and try again.
If the burner kicks off again, shut off all power at the electrical service panel ; the burner motor and ignition may be protected by separate fuses or breakers.
If the sensor has a photocell, wipe it with a clean rag or tissue and see if the furnace starts.
If the safety is a stack switch mounted on the flue, remove the screw holding the unit to the stack, slide it out, and wipe off the sensor.
If the furnace won't start after three tries, seek professional assistance. Unburned oil can accumulate in the combustion chamber and "flash back."


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Jul 31, 2012 | Heating & Cooling

1 Answer

Goodman GDS80703AXBC Flashing 6 times. Replaced Limit, Flame Roll Out, Flame sensor, Ckecked Flue. Furnace used to ignite then shut down flashing 6 times. Used central air over summer just fine. Now...


Per Goodman installation manual:
Misaligned burners, blocked flue, induced draft motor failure. I'd check the inducer first. Up top you'll see a small motor. Near it youll see a small ruber like hose. That hose goes to a round safety called an air proving switch. The end of the hose that connects to the metal, remove it and make sure the metal hole is not stopped up. Make sure the hose is clear and not kinked. Make sure the induced draft motor is working, should be the first action in a series of operation during heat. The air proving switch should close during normal operation, has 2 wires that are connected. Check all wires for loose connections, while the furnace is unplugged and no power present. Make sure everything is put back where it belongs and try it again. Most of these issues are IDM related but I have seen the rollouts open due to burners firing towards the wall of the unit, instead of into the opening of the heat exchanger. Work safe and I hope this helps!

Sep 30, 2017 | Goodman Heating & Cooling

1 Answer

Furnace not firing up...thermostat said low battery ...installed new batteries. Green (LED) light indicating power to thermostat is off. Furnace still doesn't fire up.


1) Turn the fan to on and if it runs you know that you have line
voltage to furnace and 24volts to the thermostat.

2) You could turn the furnace off remove the doors and get to the
control board. If you can find the Thermostat wires on the board
mark and remove them. If you have a typical Furnace and you
have some electrical background put a jumper wire between
terminals R and W,put the doors back on-there is a door switch
that if the panel is not put back on-it will not run. Turn your power
back on.

3) The Blower motor may come on, the induced draft blower should
come on, the glow coil should glow, the gas valve open and the
burners should come on and the unit should run.

4) If all of this happens, then you have a thermostat problem or you
have bad thermostat wires.

5) If nothing happens then you don`t have power to the furnace or the
little fuse that protects the transformer is blown.

Good Luck

Jan 08, 2010 | Honeywell Electronic Programmable...

1 Answer

I had an old two wire system, red and white. gas


Check for a bad thermostat and wire by jumping the red and white wire together at the thermostat. If the unit fires, you have a bad thermostat. If it does not, jump the R and W terminals at the furnace (or where ever the thermostat wires are connected to). If the unit fires you have a bad wire. If it still does not fire, you have an issue with the heating system not the thermostat or its wires.

Dec 06, 2009 | Honeywell Focus 6300B 5-2 Days...

1 Answer

Rheem RKKA048JK10X Furnace/AC Unit. My rooftop


Mr. Miller,

It may be a problem with the tubing from the inducer to the pressure switches. During the night hours, condensation forms and collects in these tubes preventing the pressure switch from closing when the inducer motor starts. Check these tubes and possibly re-route so there is no sag in the middle. Try to route them so they are as straight as possible. If that is not possible, at the location of the sag, cut the line, put a "T" fitting in and attach a piece of line to the bottom of the tee with a plug to catch the accumulated condensation.

Also, have your service company check the firing rates, gas pressures and temperature rise across the heat exchanger, Any of these can also cause a problem with condensation accumulation in the pressure switch tubing.

Nov 10, 2009 | Heating & Cooling

2 Answers

Dometic/Duotherm propane furnace won't fire up


If this unit has a spark ignition you may just need to clean the flame sensor. It is a metal rod protruding in the path of the flame.

Feb 10, 2009 | Dometic Rooftop RV Air Conditioner

2 Answers

Amana 80SSE Furnace


Not much info to go on, but lets look at a few possibilities. Your thermostat could be turned to the ?Fan On? setting, make sure you put it in the ?Auto? mode. Or it could be bad, or there could be a short in the wiring. Open up the access panel on your furnace. Lets eliminate the thermostat from the equation by disconnecting the red, white and if you have a yellow wire at the furnace. Mark down which wire went where. The furnace will have a door safety switch that will have to be taped temporarily closed to test the furnace. With a short piece of wire (2-3" long), strip off 1/2 inch of the insulation on both ends. Secure one end on the R terminal where you removed the red wire from your thermostat. Take the other end and touch the G terminal on the same electrical board. Your fan will start. Don't worry about an electrical shock, the voltage is only 24 volts. Now with one end still attached to the R terminal, touch the W terminal where the white wire was attached. The furnace will now try to fire up. Hold it there until you see that it did start. If you did this and had success, I would say it was your thermostat or the wire going to it. Last resort would be a bad control board. If you want, you can do test your thermostat wiring by removing the thermostat from it's mounting plate. Put all wires back where they were on the furnace. Make sure the access door is back in place and secure. Take that same jumper and jump across the red and white wires on the mounting plate. Again the furnace should start up. Have a helper jiggle the thermostat wires where accessible when the furnace is running and see if it remains on or shuts off. If everything checks out, replace the thermostat. Good Luck!

Oct 08, 2007 | Heating & Cooling

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