Surge Guard 34560 Trips at night

[Freightguy]

Ok here is a strange one. I have a Surge Guard model 34560, its the hardwired 50 amp model. Been working fine for over a year. 3 nights ago the thing starts tripping when my front air conditioner comes on. Next night it started tripping when either one comes on. I replaced my breaker at the pedestal, cleaned all contacts. Then measured voltage. I got 121 volts inside the pedestal, 121 volts in the receptacle, 121 volts on both sides of the surge guard and finally 121 volts at all the outlets in the motor home.

I checked the surge guard site and got their troubleshooting paperwork. My voltage is within their range of 102 to 132 volts.

Here is the real kicker. This only happens at night after the sun goes down! Very strange. I am in Florida and I run both my AC's all day with no issues. Anyone every have this happen? Thanks,

[Freightguy]

Tech siad something about the heat of the day then cooling at night causing transformer voltage to range higher and lower.

[CA_Traveler]

FPL could be switching the power and causing a power glitch. I've had that happen in CA.

[Freightguy]

Just had FPL (power company) out here and they tested the lines. The tech says its a Florida thing with what happens at night. Says my surge guard is most likely too sensitive.

[popeyemth]

Perhaps dew condensing and causing a fault?

[Freightguy]

ken white wrote:
It is probably working fine - a low or high line condition is occurring at night. If you meter has a min/max hold feature, connect to the main panel and monitor overnight.

Thanks, I dont have the min/max on my meter, but I did leave it turned on next to my bed last night and had the leads in the outlet there. I had a range of 119 to 121 pretty much each time I looked at it.

[ken_white]

It is probably working fine - a low or high line condition is occurring at night. If you meter has a min/max hold feature, connect to the main panel and monitor overnight.

[Dick_B]

Might we assume you contacted Surge Guard?