Raypak 266,000 btu natural gas heater Error messages "sensor failed" and sensor shorted"

[Jim GOZZ]

Last year I believe gas built up inside the unit and when it finally lit, the door blew off.

that being said, it ran fine after that but later in the year I started getting the error messages "sensor failed" and sensor shorted" and the display tells me "No Demand and temp 213degrees.

what can you tell me?

 

[ajw22]

Welcome to TFP.

You need to replace the temperature sensor thermistor. Page 46 in http://cdn.globalimageserver.com/FetchDocument.aspx?ID=c404f1c5-ac50-4209-9457-56246d010b20

Part 6C. P/N 009577F

Raypak - Sensor Failure - Water Temp 104F

Hello, I have a RayPak inground pool heater R336 that is two years old. I just opened our pool and everything was running fine and the heater was functioning. I go out yesterday morning and the heater is off, the pool water temperature is 74F (per thermometer in the pool) , but the heater...

www.troublefreepool.com

 

[Jim GOZZ]

Last year I believe gas built up inside the unit and when it finally lit, the door blew off.

that being said, it ran fine after that but later in the year I started getting the error messages "sensor failed" and sensor shorted" and the display tells me "No Demand and temp 213degrees.

what can you tell me?

 

[Jim GOZZ]

Welcome to TFP.

You need to replace the temperature sensor thermistor. Page 46 in http://cdn.globalimageserver.com/FetchDocument.aspx?ID=c404f1c5-ac50-4209-9457-56246d010b20

Part 6C. P/N 009577F

Raypak - Sensor Failure - Water Temp 104F

Hello, I have a RayPak inground pool heater R336 that is two years old. I just opened our pool and everything was running fine and the heater was functioning. I go out yesterday morning and the heater is off, the pool water temperature is 74F (per thermometer in the pool) , but the heater...

www.troublefreepool.com

That's very helpful...I'm guessing that is on the right side of the unit and hopefully not too hard to change out. Thanks for all your help, I'll let you know if I'm able to get it going.

 

[Jim GOZZ]

ok, so i replaced the temp sensor (mice ate through wires)...I am still getting the following error messages:

"Sensor failure"
"Sensor Open"

and now a new error message...

"Low temp Lockout"

any ideas?

 

[ajw22]

Check for other wires the mice chewed on.