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Author Topic: Our Coleman Mach Heat pump not cooling  (Read 221 times)

LewisWhelan

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  • Posts: 5
Our Coleman Mach Heat pump not cooling
« on: January 30, 2018, 10:15:13 AM »
We have a 2004 Winnebago Adventurer with a Coleman Mach heat pump.   The heat pump will produce heat but it will not cool.   We were trying to cool when the outside temperature was 77F.   When the heat pump is on cool the heat pump turns on and the fan runs but it is just blowing warm air.    When it cooled off at night to 60F the heat pump did produce the required heat.   Any advice would be appreciated.   We checked the filters and the look fine.  Could this be a result of low coolant?

kdbgoat

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Re: Our Coleman Mach Heat pump not cooling
« Reply #1 on: January 30, 2018, 10:22:05 AM »
The reversing valve may not be working, or maybe a hung-up check valve. These are the first things we used to check when servicing residential units a hundred or so years ago. I assume the same would pertain to an RV heat pump. We used to check for sticky/stuck check valves with a magnet.
I know you believe you understand what you think I said,
But I am not sure you realize what you heard is not what I meant


2016 Leprechaun 319DS

Memtb

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  • Posts: 284
Re: Our Coleman Mach Heat pump not cooling
« Reply #2 on: January 30, 2018, 02:00:49 PM »
The reversing valve may not be working, or maybe a hung-up check valve. These are the first things we used to check when servicing residential units a hundred or so years ago. I assume the same would pertain to an RV heat pump. We used to check for sticky/stuck check valves with a magnet.


  This was going to be my suggestion. It recently happened to us. The good thing is, it can be easily changed without opening the system!
Todd and Marianne
Home Base: Winchester, Wy.
Miniature Schnauzers - Sundai, Nellie and Maggie Mae
2007 Dodge Ram 3500,  6.7 Ram 6 speed manual, 4x4
2004 Teton Grand Freedom
2007 Bigfoot Class C

LewisWhelan

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  • Posts: 5
Re: Our Coleman Mach Heat pump not cooling
« Reply #3 on: January 30, 2018, 05:50:13 PM »
Thank you for the quick responses.   We checked all the connects that we could see to ensure they were connected after our journey south as we had lots of bumps along the way.   Luckily it is now working!

Memtb

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  • Posts: 284
Re: Our Coleman Mach Heat pump not cooling
« Reply #4 on: January 30, 2018, 08:06:32 PM »
   Good for you. Enjoy your outing!
Todd and Marianne
Home Base: Winchester, Wy.
Miniature Schnauzers - Sundai, Nellie and Maggie Mae
2007 Dodge Ram 3500,  6.7 Ram 6 speed manual, 4x4
2004 Teton Grand Freedom
2007 Bigfoot Class C

LewisWhelan

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  • Posts: 5
Re: Our Coleman Mach Heat pump not cooling
« Reply #5 on: February 03, 2018, 09:26:12 AM »
Thanks

 

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