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Old 10-03-2016, 07:19 AM   #1
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Click sound before heat kicks on - 2014 Forest River

I recently purchased a 2014 Forest River 294BH. This weekend we turned on the heat. We noticed a clicking sound before the heat turned on. That clicking sound continued for about 30 seconds after the heat was on. It sounds like it's coming from the AC unit area. The camper was plugged in to electric. I didn't sound like it does when you're trying to light the stove. And the clicks weren't in the same repetitive loop.

What could this be? Everything seems to work, but it woke us up several times in the middle of the night so I just wanted to make sure it's all good.

Thanks!
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Old 10-03-2016, 07:59 AM   #2
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what you are describing sounds to me like the spark ignition on the furnace.
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Old 10-03-2016, 08:07 AM   #3
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The furnace uses a direct spark ignition (DSI) vs the old pilot light. When heat is called for, the gas valve opens and the electronic igniter generates a spark to light the furnace. Much like the igniter on a gas grill Normal operation.
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Old 10-03-2016, 08:13 AM   #4
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Since the OP said the sound seems to be coming from the A/C unit, my guess is a relay in the control at the A/C unit.

Some of these units with Dometic digital thermostats have relays in the A/C that work in conjunction with the furnace to provide A/C fan when the furnace runs. It could possibly be that.

I wouldn't think it would be so loud it would wake you from a sleep though??
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Old 10-03-2016, 08:53 AM   #5
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Like 5Picker said, there are relays in the A/C control box. With the digital thermostat/control box, there's a relay for the furnace and a couple for the blower.

The furnace relay would click each time the t-stat calls for heat and the one for the A/C blower would also click if the fan is set to either hi or low. However they shouldn't be clicking more than once each time stat calls for heat.

There have been reports of this before and it wound up being a problem with the control box.
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Old 03-20-2017, 05:41 AM   #6
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Any updates on this issue? Mine is doing the same thing and it's annoying! Wakes me up every time.
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Old 04-17-2017, 07:41 AM   #7
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By "control box", are you referring to the thermostat? I've read other posts concerning this and someone changed out their thermostat to resolve this problem.
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Old 04-17-2017, 11:01 AM   #8
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The control box is the box in the A/C. It's behind the filter grill.
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Old 04-17-2017, 12:11 PM   #9
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See below.

Yes, mine is the same thermostat and I don't have a heat strip in the A\C that the clicking sound comes out of. Here goes: Make sure the Single Zone LCD thermostat is in the Off condition. Press the "+" button and, while holding it, also press and hold the On/Off Mode button for 3 seconds. LCD will show --. Press the On/Off Mode button again to turn system off. This completes the initialization. The furnace On/Off temperature differential should be set at this time.
"Furnace"- Furnace Mode
In the FURNACE mode the system will cycle the RV's furnace On and Off based on the room air temperature and the temperature set-point on the Single Zone LCD thermostat. The system can be configured to operate using an On/Off differential of either 1 degree F or 2 degree F. This feature is programmed during the system initialization. To set the temperature differential the system must be Off. Press the "-" button and, while holding it, also press and hold the On/Off Mode button for three seconds. Release the On/Off Mode button. Then release the "-" button. Press the "+" button to toggle between "d1 and d2", "d1" for 1 degree F differential and "d2" for 2 degrees F differential.

When I did this originally I thought it would be better to have d1 as the setting. I still had the clicking. When I got fed up last weekend listening to the clicking I did the initialization again and this time I set if for d2. Don't know if that did the trick or just redoing the initialization again, but it worked with no more clicks. Hope this helps fix yours as I know what you are going through.
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Old 04-17-2017, 02:19 PM   #10
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Great! I will try this and post the outcome
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