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Old 11-26-2016, 01:28 PM   #1
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RV Comfort ZC Thermostat problems

Ok I have read all the advise on this remarkable product. My thermos is a ak7807h in a 2003 Discovery. Worked fine until last few trips. Locks up in Zone 1 or Zone 2 or does not recognize Zone 1. Heaters came on in Zone 2 and after about a half hour (or longer) Zone 1 Wednesday night. Thursday night can't get any heat and thermo locked. Pulled fuse, held buttons as suggested in other posts no go.

Any thoughts, this thing has worked fine before but been shaky in the last year or so.
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Old 11-26-2016, 01:46 PM   #2
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Have you tried pulling fuse for at least 5 mins while you are waiting unplug any wireless phones any fluorescent lights and then replace fuse and then turn back on and see if that helps
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Old 11-26-2016, 02:43 PM   #3
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Pulled all cell phones out and both heaters now on. That is a bit of a pain to get it to work. Heard of something to hook up to prevent this. Any ideas?
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Old 11-26-2016, 04:32 PM   #4
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Yeah but it may happen again in 30 mins or 3 years. But at least she is working now.
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Old 11-26-2016, 04:37 PM   #5
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There's a choke filter that has worked for fluorescent interference.

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There's a few threads about this. I'll try to find it and post a link if I do.
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Old 11-26-2016, 04:39 PM   #6
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Here's one.

http://www.irv2.com/forums/f54/fluor...ce-196291.html
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Old 11-27-2016, 06:20 PM   #7
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I agree it fixed then went back to freezing up etc. Four adults with phones, five kids three with cell phones, the thermostat doesn't have a chance.

Thanks for all your help, I am going to try the choke and go from there.
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