AC Causing Power Inturruption
I have noticed that the factory installed roof mounted air conditioner unit causes a short 120VAC power interruption after running for a few (2/3) hours. I does not trip any breakers but all 120 volt ...
Forum Discussion
Some thoughts:
*If* you are positive all 120 volt circuits are dropping out simultaneously, there is a clicking sound, and it automatically restores, there could be an EMS unit that is shutting power off due to low voltage. An EMS could be installed next to the converter.
If you have a Progressive Industries unit (aka "surge protector') like the EMS-HW50C, it will cut out when the voltage drops below 104 volts. If it does drop out, it will automatically turn back on in the factory setting of 15 seconds unless it has be reset for 136 seconds. You don't want to let an AC unit repeatedly "short-cycle" and they should not be re-started or allowed to restart for around 2-4 minutes.
Heartland lists a generator as an option for the OP's TH. If there is a generator, maybe it's the ATS. An ATS, such as this Surge Guard unit, will drop out when the voltage gets down to 95 volts and will restore power after a 150 second delay. Allowing voltage to get down to 95 volts is not good for an AC IMO, but that's another topic in itself. There would be a clicking sound similar to an EMS from the contactor.
If there is a low voltage condition, an AC unit will draw more current which can it turn cause the voltage to drop farther. An AC unit can sometimes itself cause short cycling which will draw more current, and possibly trip the AC breaker or even main breaker and cause a voltage drop. (A poorly placed t'stat can also cause an AC to short cycle.) Short-cycling *could* potentially cause an EMS or ATS to drop out.
There are other potential causes of low voltage like a dirty & pitted shore power plug and poor connections.
Getting a voltage monitor is a good idea so you can regularly keep an eye on what's happening. A voltmeter would help too.
I would suspect a low voltage condition and you'll need to find the cause.
If it is simply a low supply voltage situation and there is an EMS and/or ATS, you could use an autoformer like the Franks or Hughes units, which boost the incoming voltage.
*If* you are positive all 120 volt circuits are dropping out simultaneously, there is a clicking sound, and it automatically restores, there could be an EMS unit that is shutting power off due to low voltage. An EMS could be installed next to the converter.
If you have a Progressive Industries unit (aka "surge protector') like the EMS-HW50C, it will cut out when the voltage drops below 104 volts. If it does drop out, it will automatically turn back on in the factory setting of 15 seconds unless it has be reset for 136 seconds. You don't want to let an AC unit repeatedly "short-cycle" and they should not be re-started or allowed to restart for around 2-4 minutes.
Heartland lists a generator as an option for the OP's TH. If there is a generator, maybe it's the ATS. An ATS, such as this Surge Guard unit, will drop out when the voltage gets down to 95 volts and will restore power after a 150 second delay. Allowing voltage to get down to 95 volts is not good for an AC IMO, but that's another topic in itself. There would be a clicking sound similar to an EMS from the contactor.
If there is a low voltage condition, an AC unit will draw more current which can it turn cause the voltage to drop farther. An AC unit can sometimes itself cause short cycling which will draw more current, and possibly trip the AC breaker or even main breaker and cause a voltage drop. (A poorly placed t'stat can also cause an AC to short cycle.) Short-cycling *could* potentially cause an EMS or ATS to drop out.
There are other potential causes of low voltage like a dirty & pitted shore power plug and poor connections.
Getting a voltage monitor is a good idea so you can regularly keep an eye on what's happening. A voltmeter would help too.
I would suspect a low voltage condition and you'll need to find the cause.
If it is simply a low supply voltage situation and there is an EMS and/or ATS, you could use an autoformer like the Franks or Hughes units, which boost the incoming voltage.
