Not getting power to Mastertemp400

[JamesW]

Can you show the back of the circuit board?

 

[JumpingGecko]

I replaced the relay driver chips and nothing changed so the relay is the problem. I have a legacy control panel so I think I'll just upgrade it to an intellicenter. Thank you very much to all that replied. I could not have solved this without the amazing help!

Best regards,
Mike

 

[JamesW]

You can replace the relay.

 

[JumpingGecko]

How hard is it to replace the relay? I guess more specifically, how hard is it to remove the bad relay? I can solder in a new one.

 

[JamesW]

You can usually find a local shop that can do the repair for a small fee.

 

[JamesW]

Get the part and bring it somewhere to have the part replaced.

I am still not sure that the relay is the actual problem, but it is worth a try.

Apply 24 volts DC to the coil to see if the relay closes.

Terminals #2 and # 9 are the coil.

https://www.digikey.com/en/products/detail/omron-electronics-inc-emc-div/G5V-1-DC24/87835

https://www.mouser.com/ProductDetail/Omron-Electronics/G5V-1-DC24

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[JamesW]

https://www.youtube.com/results?search_query=desolder+from+pcb

 

[JumpingGecko]

I've ordered the part and will update once the new relay is installed.

Thanks,
Mike

 

[JamesW]

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[JumpingGecko]

I removed the circuit board and before I replaced the relay, I tested it. I hooked my multimeter to J19 (Heater) and set it to audible continuity. I then applied 24V DC across pins #2 & #9 and the meter sounded, indicating that it did close. So, it’s not the relay. What can I check next?

Thanks,
Mike

 

[ajw22]

You either have a problem with the EasyTouch setup, programming, or usage; the relay drivers, the relay; or the PCB.

If you believe the relay driver chips and relay are good you should look at the EasyTouch setup and why it is not triggering the relay.

 

[Poolbreh]

Heater should be displayed in the top right if your settings have the spa heat source to heater.

 

[Poolbreh]