State GS6 75 URRBS - Manual (Page 18)

18
TROUBLESHOOTING
For your safety, water heater service should be performed only by a qualifi ed service technician.
Read the GENERAL SAFETY INFORMATION section fi rst .
PROBLEM POSSILBE MALFUNCTION SERVICE TO BE PERFORMED
NOT ENOUGH OR NO HOT WATER
1) Blower will not run.
A) "ON/OFF" control switch turned off. Turn switch to the on position.
B) Blower unplugged. Plug blower back into 115 vac. outlet.
C) No power at outlet. Repair service to outlet.
D) "ON/OFF" switch defective. Replace switch.
E) Control harness defective. Replace control harness.
F) Blower motor defective. Replace blower and motor.
2) Blower running, burner not on Replace switch.
A) Fan not running fast enough to close
air switch contacts. Check for low voltage, less than 102 vac.,
have service checked and repaired.
B) Air pressure switch defective. Replace switch.
C) Gas valve defective. Replace gas control valve/thermostat.
D) Control harness defective. Replace harness.
E) Igniter defective. Replace ignitor.
F) Unit has completed three trials to light
and fail. Reset cycle by turning switch off and then
back on. If unit does not light in three tri-
als, contact a qualifi ed person for service.
3) Thermostat problems
A) Thermostat set too low. Set temperature control higher.
B) Thermostat or ECO defective. Replace thermostat.
C) High limit control circuit open. Replace high limit control.
4) Others
A) Heater undersized. Reduce hot water usage.
B) Low gas pressure. Contact a qualifi ed person for service.
C) Incoming water is unusually cold. Allow more time for heater to re-heat.
D) Leaking hot water pipes or fi xtures. Have plumber check and repair leaks.
CONDENSATION A) Water on the fl oor under heater. See "Condensation"
WATER LEAKS
Improperly sealed, hot or cold supply
connections, relief valve, drain valve or
thermostat threads. Turn off heater & water, repair unit.
Leakage from other appliances or water
lines. Inspect other appliances near water
heater.
Condensation of fl ue products. Refer to "CONDENSATION"
LEAKING T&P VALVE
Thermal expansion in closed water sys-
tem Install thermal expansion tank (DO NOT
PLUG T&P VALVE)
Improperly seated valves Check relief valve for proper operation
(DO NOT PLUG T&P VALVE)
HOT WATER ODORS OR COLOR
(Refer to ANODE ROD)
High sulfate or mineral content in water
supply or iron or sulfate reducing bacteria
in water supply Drain and fl ush heater thoroughly, chlori-
nate, refi l and fl ush again then chlorinate
water supply.