I have a Sta-Rite SR333NA pool heater. Everything works fine with the pool heater cover off but with the cover on the heater keeps cycling on & off. There are no error codes or service heater lights on the display. I have put in all new electrical components but still no solution. It feels like it is not getting enough air into the blower but I have checked and there are no obstructions inside the cover and all the plastic air tubes to the various components are good.
This one is strange!
- Thread starter Mr T
- Start date
borjis
LifeTime Supporter
Pool heater cover?
Or pool bubble cover?
Covering a heater would mean it doesn't breathe the way it needs to operate. Fire hazard.
I think maybe you mean bubble cover for pool?
Check to make sure it isn't impeding flow in the skimmer.
Or pool bubble cover?
Covering a heater would mean it doesn't breathe the way it needs to operate. Fire hazard.
I think maybe you mean bubble cover for pool?
Check to make sure it isn't impeding flow in the skimmer.
Its the hard "Plastic Case" that covers the heater parts from the elements, takes 4 screws to remove.
swamprat69
Well-known member
Are the air inlet louvers on the cover completely open and not restricted with any debris? Is the exhaust vent and vent grill completely open and not restricted with ant debris? If both are ok, you might want to check the blower vanes for dirt and also check amp draw of the blower against its nameplate rating. How old is the heater?
Yes all inlets open, not restricted. Checked blower and nothing in veins. Heater is about 2 years old, all new electrical parts.
swamprat69
Well-known member
That seems to leave the blower not operating at the correct speed (check amp draw against nameplate rated amp draw) and bad air pressure switch if all tubing is clear and not cracked ( check actual pressure developed against air pressure switch set point).