GP-PWM-30 OVER VOLTAGE ERROR
Been having an issue with my GP-PWM-30 solar controller for awhile now and am finally getting around to messing with it with having a trip coming up. As I understand the problem, I have and over v...
Forum Discussion
Two different issues apparently;
1. battery voltage 12.19 should be that at the controller's BATT terminals. No idea why it is 7 volts instead of 12.2v
2. ARRAY terminals on controller should be close to that 12.2 too, where a PWM controller just passes through battery voltage until its high voltage set point is reached. It then "controls" to keep that voltage from going higher. Typical high set point 14.6v
You have 22 volts at the ARRAY side, indicating that the panel voltage is reading typical OC voltage for a "12v" panel so the panel wiring to the controller is shorted. Unless you shorted it with the meter and got OCV, which is how you measure OCV.
Meanwhile your battery is going down in state of charge, now as low as it ought to go (half way) so you need to plug in a battery charger (or use the converter with shore power or gen) while the solar gets sorted out.
1. battery voltage 12.19 should be that at the controller's BATT terminals. No idea why it is 7 volts instead of 12.2v
2. ARRAY terminals on controller should be close to that 12.2 too, where a PWM controller just passes through battery voltage until its high voltage set point is reached. It then "controls" to keep that voltage from going higher. Typical high set point 14.6v
You have 22 volts at the ARRAY side, indicating that the panel voltage is reading typical OC voltage for a "12v" panel so the panel wiring to the controller is shorted. Unless you shorted it with the meter and got OCV, which is how you measure OCV.
Meanwhile your battery is going down in state of charge, now as low as it ought to go (half way) so you need to plug in a battery charger (or use the converter with shore power or gen) while the solar gets sorted out.
