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Old 03-01-2020, 02:33 AM   #16
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Okay I just watched a little how to on how to test resistance I didn't know it was actually ohms also which it makes it confusing. Okay so I'm moving forward now I just need to know which points to probe with my multimeter too measure resistance on the blower motor? I'm also assuming I'm going to have to disconnect the circuit board that the blower motor is wired to? so that I can isolate it to test it properly for resistance?
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Old 03-01-2020, 07:39 AM   #17
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Re: Panasonic Econavi Heater/AC


The CN-FM connector is the blower motor.
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Old 03-01-2020, 09:35 AM   #18
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CN-FM is going to be marked I'm assuming on the circuit board huh?
so I'm not going to be able to be in front of it until tomorrow. Thanks
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Old 03-01-2020, 09:50 AM   #19
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Re: Panasonic Econavi Heater/AC


Should be marked.
But as I said previously I’ve never heard of or seen that brand. And never worked on a Panasonic.
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Old 03-01-2020, 10:05 AM   #20
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Thanks appreciate it. Looks like though if I locate thisand try to test for resistance and it's soldered to a circuit board I either have to buy a new circuit board or remove and reattach it solder it back?
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Old 03-01-2020, 10:12 AM   #21
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Re: Panasonic Econavi Heater/AC


They are usually plug connections.
But in all reality your looking for a short circuit connection. Said short can be anywhere, from in the wall head to the load wiring to even the breaker itself.
But the fact that you say the issue only happens when this head runs suggests that the problem is somewhere in the head.
You’ll have to hunt for it. Could have nothing to do with the motor.
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Old 03-01-2020, 02:59 PM   #22
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Re: Panasonic Econavi Heater/AC


Thanks. Yeah they are all plug in connections it looks like. So thats where I test for resistance by unplugging the connectors and touching those with meter? What are you referring to by the head?
Im actually going to start tomorrow first with testing for a bad breaker.
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Old 03-01-2020, 03:08 PM   #23
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Re: Panasonic Econavi Heater/AC


You should be able to ring out any loads and look for shorts. Or shorts to ground.
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Old 03-04-2020, 02:58 PM   #24
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Re: Panasonic Econavi Heater/AC


Any luck OP?
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Old 03-07-2020, 04:23 AM   #25
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Re: Panasonic Econavi Heater/AC


so we ordered a part for tech. i didnt have the time to do it with everything else im doing on this complex. he said it took a long time to get to the blower motor.
I took an extra one we had apart in probably 30 minutes though but i was sort of rough. I would have liked to have done this myself to learn how to do it but just didnt have time.
Anyways from my understanding it has a shaft and motor and thats hooked up to a circuit board. so it would just be swapping that part out?
They want to just replace the entire head since they wont use provided parts.
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Old 03-07-2020, 04:25 AM   #26
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Re: Panasonic Econavi Heater/AC


backing up. the breaker was fine it was just loose in the panel. i tested both hot legs for 120 and then the double 25 amp and couldnt get a accurate voltage reading.
it was the motor blower as suspected.
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Old 03-07-2020, 10:44 AM   #27
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Re: Panasonic Econavi Heater/AC


When using a meter, make sure and test across the circuit. You indicated you tested both sides of the breaker to ground, which wouldn’t necessarily have show a problem if you dropped a leg.
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Old 03-07-2020, 11:49 AM   #28
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I meant to say that I tested both sides of the breaker. Red and black does that mean breaker to ground? Then I tested each red and black individually and my other probe on the neutral bar that's where I got 120. But when I tested both red and black together and my multimeter set at 240 volt I was getting a false reading and I was wondering why I couldn't read that cuz I thought I'd at least get to 220 I'm using a harbor freight $7 multimeter though and I thought maybe it's cuz it's a crappy multimeter or reading it wrong cuz I don't remember exactly what it said but I didn't read anything like 220 or 240. Or I was just doing it wrong and the reading that it was displaying was like a single-digit.
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Old 03-07-2020, 11:49 AM   #29
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What do you mean by testing across a circuit?
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Old 03-07-2020, 02:46 PM   #30
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Re: Panasonic Econavi Heater/AC


Don’t test from each wire to ground. Test from wire to wire.
Testing from each wire to ground doesn’t absolutely mean you have a proper energized circuit. You could have a dead leg.
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