Solar charge controller is turned-on but it doesn’t charge batteries

[Twilightbone]

Hi!
I have a 12v system consisting of four Hqst Module Type 150D Max Power STC 150W panels, Open circuit voltage 22.5v, Short circuit current 9.0A. There is a pass box with a red 50A switch that appears to be open in pic #1 bellow. This passbox connects the Pv cables from outside to an Hqst Mppt 40 Solar charge controller. This Solar charge controller is very similar if not identical to the Epever Tracer 1 reviewed in one of yo Will’s YouTube videos a couple of years ago. Both user manuals are basically identical. There is a circuit breaker connected to a 3000w Edecoa power inverter and finally two Powertec 12v 250AH lead acid batteries. The batteries are connected to a BLS-12/24C electronic desulfator.
The inverter and the two batteries are brand new. The inverter shows batteries are charged (3 horizontal bars), I ran the system and everything worked fine but the Hqst 40A Solar charge controller is not charging batteries. I tested the panels with a multimeter around 12 noon and each one read 19.6-19.8 volts (DCV). The label in panels Open circuit voltage is 22.5 but I read somewhere that when panels are very hot they tend to be a bit lower so I assumed that 19.8 means the panels are good. But the controller is not charging. What can be wrong? Can someone help me fix this? I can send you a short video showing the system and the Solar controller readings.

 

[yodamota]

are you saying the circuit breaker (red 50amp) is open?

 

[Texas-Mark]

There is a pass box with a red 50A switch that appears to be open in pic #1 bellow.

Flip the switch and see what happens. If it is open, of course it won't charge.

 

[Twilightbone]

Hi!
Thanks for taking your time to help out. I just realized it might have tripped will attach a picture here! The 50A (the one with the number on it) switch is pointing up and it springs back up when I push it down to the left. There is also another smaller button left of the switch. When I push it in it pops back up and nothing happens. Neither of them stay in place. What needs to be done?

 

[Texas-Mark]

Remove the two wires from it and see if it will stay latched. If not, you need a new breaker. If it does stay latched you have a short or other issue on the output.

 

[Twilightbone]

Remove the two wires from it and see if it will stay latched. If not, you need a new breaker. If it does stay latched you have a short or other issue on the output.

Please pardon my ignorance. Do you mean remove the cables fastened to the controller or remove the cables connecting to the 50A switch inside the passer box?

 

[Texas-Mark]

Remove the wires to the 50A breaker.

 

[Twilightbone]

Please pardon my ignorance. Do you mean remove the cables fastened to the controller or remove the cables connecting to the 50A switch inside the passer box?

Remove the wires to the 50A breaker.

Thanks!