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Old 09-15-2019, 08:11 AM   #1
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Heat pump question

The front heat pump on my 2012 Ellipse is blowing cold air. I can hear the compressor turn on and the unit is pulling 15 amps. Both the mid and rear heat pumps working fine. The outside temp is 58 degrees. Any ideas why front unit is not heating? Thanks.
Jerry
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Old 09-15-2019, 09:40 AM   #2
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It takes a heat pump a few minutes to start blowing warm air. Next, are you sure it is a heat pump unit?

The reversing valve can stick and not allow the unit to change from heat mode or get stuck in cooling mode. You need to check the solenoid coil up top and make sure it is energizing.

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Old 09-15-2019, 09:58 AM   #3
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One way to check the solenoid coil is to touch a small screwdriver on top. If it is energized it will pull the screwdriver down. Keep in mind that some heat pumps energize coil in heating and some in cooling. You will have to check both modes to see if coil works
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Old 09-15-2019, 11:35 PM   #4
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Quote:
Originally Posted by F117plt View Post
The front heat pump on my 2012 Ellipse is blowing cold air. I can hear the compressor turn on and the unit is pulling 15 amps. Both the mid and rear heat pumps working fine. The outside temp is 58 degrees. Any ideas why front unit is not heating? Thanks.
Jerry
As mentioned give it a few minutes runtime before expecting any heat. If after several minutes of runtime and still no heat I would check the reversing valve to see if it's getting a signal from the control board. If it is getting a signal and not switching the direction of the coolant through the system it's pretty much the end of the line because no replacement parts are available.

However if the solenoid is not getting a signal you probably have a bad control board. We had the same problem with a Coleman Mach 8 unit on our 2013 Adventurer. I called the Coleman (Airxcel) service and support number. I talked to a technician and he walked me through the test procedure. The test determined that the board was bad. They sent me a new one, I installed it and now have had a properly working AC/Heat Pump.
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Old 09-16-2019, 08:22 PM   #5
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One way to check the solenoid coil is to touch a small screwdriver on top. If it is energized it will pull the screwdriver down. Keep in mind that some heat pumps energize coil in heating and some in cooling. You will have to check both modes to see if coil works


Thanks Don, Iíll check the solenoid. My unit is working in cooling mode.
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Old 09-16-2019, 08:36 PM   #6
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Thanks Don, Iíll check the solenoid. My unit is working in cooling mode.
What I was getting at try heating and cooling both with the screwdriver as solenoid may kick in cooling mode. Some units, solenoid kicks in on heating, some on cooling.
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Old 09-16-2019, 08:47 PM   #7
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You can order and swap out the electromagnet, what some are calling a solenoid. Mine quit cooling. Electromagnet was an electro-nothing. I removed it and zip tied it out oof the way, and installed a bad arsed magnet in its place. BAM, permanant cooling until I removed the magnet. If you do same, maybe you'll have a permanant heater.
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Old 09-16-2019, 08:50 PM   #8
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Old 09-19-2019, 08:12 AM   #9
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So what happened....
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Old 09-19-2019, 03:33 PM   #10
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Has anybody pointed out to you that the front unit is AC only no heat pump. Zone 1 and 2 are heat pumps and zone 3 the front unit is AC only. On your thermostat when you set it to Heat Electric zone 3 shows no indication other than the room temp. When heat is selected the mode button does nothing on zone 3. Zone 3 on gas also does nothing. It only works when cool is selected. This is only the case on a stock coach if the front unit was replaced with a heat pump disregard the above.
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Old 09-20-2019, 03:33 PM   #11
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My 2012 only has two zones. All three of my units are definitely heat pumps. I have had this rig for eight years and the front unit has worked as a heat pump until now.
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Old 09-22-2019, 07:21 AM   #12
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You can order and swap out the electromagnet, what some are calling a solenoid. Mine quit cooling. Electromagnet was an electro-nothing. I removed it and zip tied it out oof the way, and installed a bad arsed magnet in its place. BAM, permanant cooling until I removed the magnet. If you do same, maybe you'll have a permanant heater.
Do not remove it without removing the power from it. If it is not bad when you remove it, it will be if you power it up without something in the coil. it will fail quickly and get very hot! Just a heads up!
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Old 09-22-2019, 07:41 AM   #13
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Protecting the solenoid...

Quote:
Originally Posted by TonyMac View Post
You can order and swap out the electromagnet, what some are calling a solenoid. Mine quit cooling. Electromagnet was an electro-nothing. I removed it and zip tied it out oof the way, and installed a bad arsed magnet in its place. BAM, permanant cooling until I removed the magnet. If you do same, maybe you'll have a permanant heater.
When you remove a solenoid and it will be hanging in the breeze, insert a bolt that is about the same size as the hole in it. If it energizes without something on the inside, it will probably burn out in a very short time if it was not already dead.
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