PROBLEM
System is not running long enough.
Dirty Filter is keeping the heater from
firing.
Thermostat is faulty or out of
adjustment.
Pressure switch is inoperative.
Heater
is too small.
Gas system is under sized.
|
SOLUTION
Reset time
clock.
Backwash filter.
Test & replace
thermostat as needed.
With a clean filter, test switch; replace
if necc.
Consult heater-sizing chart and upsize
unit.
Check gas-pipe sizing charts and upsize plumbing; check
meter & supply shut-off valve for proper sizing. |
| |
|
Heater goes on and off repeatedly
|
Problem
Filter is dirty
Pool
water level is low
Manual bypass is out of
adjustment
Pressure switch is out of adjustment |
Solution
Backwash filter
Raise
water level
Adjust bypass
Adjust pressure switch
and verify that heater shuts off when system's pump is off |
| |
|
Soot has formed in combustion
chamber
|
Problem
Excessive water is flowing through
heater
Air supply is inadequate
Air inlet
or venturi for burner is plugged
Time clock prevents
heater from running long enough to heat water
Gas valve regulator
is out of adjustment
|
Solution
Correct water flow and clean heat
exchanger
Check installation for proper clearances and/or
venting(Indoors, verify adequacy of air supply and
venting.)
Check for debris, dirt, insects or small animals in
burner inlet throat or venturi and clean
Adjust time clock and
clean heat exchanger
Test for proper gas pressure and adjust
regulator as needed or replace gas valve |
