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Old 10-29-2013, 07:05 AM   #1
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Loud Sound from ELECTRIC HEATING

We have a Class A motorhome. When we are connected to electric heat, there is a rotating humming sound that goes from soft to loud. Also, when the system shuts down, it makes a small klunk. Is this a normal system?
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Old 10-29-2013, 11:41 AM   #2
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Wish I had an answer for you. All I can tell you is I had the same thing for almost a year. When I took it to the shop to be checked out the guys took all the covers off, cleaned everything, and found nothing wrong. The noise has never come back. I've decided it was the furnace complaining about dog hair. Once the dog hair was gone, no more complaints.
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Old 10-29-2013, 05:13 PM   #3
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Sounds like your "electric" heat is a heat pump. You need t open up the unit and see what is loose...check the 4 anchor bolts that hold the unit to the roof, check for loose items in the upper unit.

Normally, when a heat pump shuts down you may head a clunk...least wise on the Coleman units.

Ken
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Old 10-29-2013, 08:54 PM   #4
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Quote:
Originally Posted by dianewhite View Post
We have a Class A motorhome. When we are connected to electric heat, there is a rotating humming sound that goes from soft to loud. Also, when the system shuts down, it makes a small klunk. Is this a normal system?
Please allow the forum to be of greater service to you by providing us with more information about your RV. If you will note, most of us provide details about our RVing equipment. When questions are asked we have a good idea how to answer because of this knowledge.

Thank you and welcome to irv2, a great place to learn and teach about RVing.

Rick
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Old 10-30-2013, 03:17 AM   #5
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Quote:
Originally Posted by dianewhite View Post
We have a Class A motorhome. When we are connected to electric heat, there is a rotating humming sound that goes from soft to loud. Also, when the system shuts down, it makes a small klunk. Is this a normal system?
More information would be helpful. Please fill in your signature
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Old 10-30-2013, 05:42 AM   #6
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This is my first time on here.; I'm not sure what the signature section is to have in it. Thanks. I'll search some more to find out.
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Old 10-30-2013, 05:45 AM   #7
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This is my first time using this site. A little rough I know. We have a 2003 Winnebago Journey. The heat system is a heat pump system located under the bed.
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Old 10-30-2013, 06:20 AM   #8
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Diane, for your signature, look at the second tool bar on the left end. You need to be logged in.

Click User CP then scroll down and click Edit Signature. Follow the instruction from there. Scroll to the bottom and click to save your changes.

Ken
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Old 10-31-2013, 09:36 AM   #9
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This is my first time using this site. A little rough I know. We have a 2003 Winnebago Journey. The heat system is a heat pump system located under the bed.
I think you have basement air. Under the bed could be loud.

How long have you been in this coach?

Diane, you are safe here. We are here to help you with RV problems and not to prey or pry. Please give us as much information as you can about your problem. Is this new or has it always sounded this way? Do you get sufficient cooling and heating?

Many blessings and happy trails,
Rick
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Old 10-31-2013, 04:35 PM   #10
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I assume you have a heat pump and are hearing the compressor kick in and run. It should sound the same as when your a/c is running.
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Old 10-31-2013, 08:01 PM   #11
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Since the unit is running in heat pump mode, the reversing valve has the two coils switched. The inside coil is acting as the condenser. It is possible that the noise is coming from the reversing valve on shut down.

Ken
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Old 10-31-2013, 09:49 PM   #12
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Quote:
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We have a Class A motorhome. When we are connected to electric heat, there is a rotating humming sound that goes from soft to loud. Also, when the system shuts down, it makes a small klunk. Is this a normal system?
OK, now maybe this might help since I know more about your unit. The noise you hear may be the squirrel cage in the gas heater. My previous unit would do that when it shut down. The bearings are most likely going bad. Mine did this until I had them fix it.
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