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Old 02-29-2020, 07:53 AM   #1
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Panasonic Econavi Heater/AC


Hi,
Im working a panasonic econavi hvac heater/ac
This is heater problem right now.
Its got two econavis in the room on 25 amp double pole breaker.
One econavi heater seems to be working fine. But then the other has power but no fan will run and it trips the breaker?
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Old 02-29-2020, 09:55 AM   #2
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Re: Panasonic Econavi Heater/AC


When does it trip the breaker? When the blower starts?
Using a common circuit for multiple indoor units is very common.
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Old 02-29-2020, 10:05 AM   #3
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One units blower works and the other units blower won't turn on but the unit has power. It's been working fine for 3 years
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Old 02-29-2020, 10:46 AM   #4
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Re: Panasonic Econavi Heater/AC


When does it trip the breaker?
At 3 years old it should have some sort of warranty left. Can you call the installer back?
I don’t know much about Panasonic other then they bought Sanyo out several years back and then removed them from the US market. Panasonic seems to be one of those minis where there isn’t a lot of technical literature about them.
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Old 02-29-2020, 10:55 AM   #5
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A few minutes or so after trying to get it to run. No I can't call the installer back on the one that has to fix it.
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Old 02-29-2020, 11:03 AM   #6
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Re: Panasonic Econavi Heater/AC


Ok, if it trips the breaker you have a short.
Will it still trip if the other unit is turned off?
Use your meter to ring out the high voltage electrical components of the faulty head. You may find your short there.
What’s the model number of this equipment?
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Old 02-29-2020, 11:12 AM   #7
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Ok, where do start reading from on my meter? CS-E18RKUAW I was thinking it was a short toobut I don't know where to start probing with multi meter ad what to look for
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Old 02-29-2020, 12:26 PM   #8
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Incorrect model number I first put it's actually a CSE12nkuaw
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Old 02-29-2020, 01:25 PM   #9
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Re: Panasonic Econavi Heater/AC


Took a while but found a wiring schematic for that unit here-

https://www.manualslib.com/manual/80...page=12#manual

It’ll show you where to start. Let us know what you find.
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Old 02-29-2020, 01:42 PM   #10
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Okay thank you. I'm not going to be there till Monday to work on it though. I assumed I'd start with the wires that power the unit I don't even know what type of voltage I'm looking for am I looking for 120?I'm a beginner at reading schemetics.
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Old 02-29-2020, 01:51 PM   #11
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Re: Panasonic Econavi Heater/AC


It’s 208/230 V.
If your not comfortable working with live high voltage you may want to call someone.
You can also check the resistance of the blower and check it for shorts to ground.
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Old 02-29-2020, 03:14 PM   #12
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Thanks, I'm comfortable with it I've worked on light electrical before. How do I test for resistance on the blower motor I have to read the scheme and find which colors are doing what?
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Old 02-29-2020, 04:47 PM   #13
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Re: Panasonic Econavi Heater/AC


Blower motor wires are on the CN-FM connector but aren’t well marked as to what wires do what.
It’s will be a variable speed motor.
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Old 03-01-2020, 02:06 AM   #14
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Okay thanks I've actually got another extra unit of this and I'm wondering if I can just swap this blower motor part out and it will solve the problem. I'm new to knowing how to testing resistance. I know it's pretty simple but I just haven't done it.
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Old 03-01-2020, 02:07 AM   #15
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And you're saying that possibly having a bad blower motor will cause it to Short and trip it?
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