SPA heater, what would happen?
- Thread starter Hulaomr
- Start date
That means that the ignitor is not getting hot.
Either the ignitor is bad or it is not getting 120 volts.
The ignitor is energized with 120 volts about 20 seconds before the gas valve is opened.
The ignitor gets voltage from S1 and S2.
Since the heater is wired for 240 volts, the voltage should come from the 240 S1 terminal.
Since the heater is wired for 240 volts, the voltage should come from the 240 S1 terminal.
I noticed there is an area on the plastic case which shows a part generating heat.
Must be the green resistor in the corner. Has you see similar situation in other boards?
It looks like the relay is not closing.
Maybe a bad relay or no voltage to the relay or maybe a bad relay driver.
Maybe a bad relay or no voltage to the relay or maybe a bad relay driver.
This is probably the relay driver.
I think that part number ULN2803A will probably work for the relay driver.
ULN2803A is a commonly used integrated circuit chip that is a high-current and high-voltage relay array driver.
It is an 8-bit NPN integrated transistor array that can be used for high-current loads such as LED strips, displays, stepper motors, and drive relays.
ULN2803 is a high-voltage and high-current Darlington transistor array and is mainly used as a relay driver with an ability to handle 8 relays at a time.
https://www.mouser.com/ProductDetail/STMicroelectronics/ULN2803A
www.troublefreepool.com
I think that part number ULN2803A will probably work for the relay driver.
ULN2803A is a commonly used integrated circuit chip that is a high-current and high-voltage relay array driver.
It is an 8-bit NPN integrated transistor array that can be used for high-current loads such as LED strips, displays, stepper motors, and drive relays.
ULN2803 is a high-voltage and high-current Darlington transistor array and is mainly used as a relay driver with an ability to handle 8 relays at a time.
https://www.mouser.com/ProductDetail/STMicroelectronics/ULN2803A
Jandy Variable-Speed Epump runs for a random length of time (hours/days), then goes offline.
My Jandy Variable-Speed Epump runs for a random length of time (hours/days), then goes offline. I must hit the reset button to restart the pump. The Pump is 4.5 years old. Does not appear to be overheating. All new filters, all baskets are clean, and no obstructions going into the pump...
www.troublefreepool.com
Last edited:
The board was just an example used earlier for example.
Ignore the red arrow.
See if the relay is getting 24 volts DC.
If the relay is getting 24 volts DC and not closing, then the relay is bad.
If the relay is not getting 24 volts DC, then the relay driver might be bad or the main circuit board might be bad.