Solar bore pump question

[123rover50]

Getting short of water so decided to put a solar pump down an unused low producing borehole.

I was supplied with 2 panels 100watts and 23 volts each.
Hooked in series this gives 46 volts.
The pump is marked 36 volts and 120 watts.
The controller is 36 volts.
When hooked up it wont pump and a yellow light indicates over voltage.
A voltmeter reads a no load of 50 volts.

The supplier says he has 2 panels of 120 watts and 19.5 volts each and would I like them instead.
To my limited knowledge that sounds a better option as in series I would get 39 volts.

Would this be the way to go?

Keith

[Graeme]

What is the maximum input voltage on the controller?
Did you try connecting the pump before connecting the panels?

[123rover50]

There is nothing in the book or on the controller to indicate what it considers is overvoltage.
Yes I wired the pump to the controller before I hooked the panels to it.
As I have the panels beside the controller the wiring is very short.
Would putting a longer length of thinner wire drop the voltage enough ?
Perhaps wire in a resistance of some sort? I dont know.

[Vern]

What voltage are you getting at the pump?

[flyinglandrover]

What brand and model of pump are you using? I would be interested is a similar setup (If you can get it working)
Thanks

[123rover50]

What voltage are you getting at the pump?

No voltage coming from the controller to the pump at all.
50 volts no load going in to controller with an orange light on that means over voltage, so its stopping any current going to the pump.

[123rover50]

What brand and model of pump are you using? I would be interested is a similar setup (If you can get it working)
Thanks

Its called Solar-Wind hybrid solar water pump system. The pump was supposed to be a 3PSO.6 and 24 volt but came as a 36volt system.
Bought it off Sunenergy at Maleny QLD mail order.
Bit of a sad story really.
Paid the deposit in December but he had run out of stock. A new order was due in in a month. That was OK.
Had no contact for 6 weeks so a mate who lives nearby the shop at Maleny dropped in to see what was happening.
The owner had died a week or so back and his son is now trying to sort things out. He really has not much idea on this stuff either so I cant be too hard on him
He has a shop full of different pumps, panels and controllers and I guess is not sure what belongs to what. He is trying to contact the supplier in China for advice.
So there we are.
1250 odd bucks for the whole system . It has probes to put in the tank too so it will shut off when full.

[Vern]

tried it with 1 panel? Polarity correct?

[Graeme]

Partly cover 1 panel to drop the voltage then assuming the pump runs, slowly remove the cover as the panel o/p voltage will drop under load. Alternatively leave it connected overnight and it should be OK as the sun gets up.

[bee utey]

Wire a few household batten holders across the solar panels and install a selection of 240 volt globes (or 2x 24V truck globes in series if you have any) until the voltage is in tolerance.