State PR6 75 XRVIT - Manual (Page 37)

37
Troubleshooting (cont’d)
PROBLEM CAUSE SOLUTION
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) Thermostat defective. Replace thermostat.
E) Control harness defective. Replace control harness.
F) High limit control circuit open. Replace ECO.
NOT ENOUGH G) Blower motor defective. Replace Blower Assembly.
HOT WATER Thermostat problems.
A) Thermostat set too low.
Set temperature control higher.
B) Thermostat or ECO defective. Replace thermostat or ECO as required.
Others
A) Heater undersized.
Reduce hot water use.
B) Low gas pressure. Contact dealer.
C) Incoming water is unusually cold. Allow more time for heater to reheat.
D) Leaking hot water pipes or fixtures. Have plumber check and repair leaks.
A) Not enough dilution air to mix with Proper dilution air must be provided for dilution
flue gases. of flue temp. Refer to “INSTALLING THE NEW
VENT PIPE TOO HOT WATER HEATER” section.
(ABOVE 170˚F) B) Dilution air too hot for mixing with Check for heat sources around and/or blockage
flue gases. of dilution air intake at draft hood. (See page 25).
C) Wrong burner orifice. Install correct orifice.
A) Dirt in burner ports Turn off heater and gas, clean burner head.
B) Combustion air path restricted. Check dilution air intake exhaust venting, and
YELLOW FLAME air openings in bottom base pan for obstructions
or blockage.
C) Not enough dilution air for proper Check dilution air intake for obstructions or
combustion. blockage.
A) Water on the floor under heater. See “CONDENSATION” section.
CONDENSATION B) Water dripping from blower assembly. Provide drip “TEE” to catch condensation from
horizontal section of exhaust vent close to
blower assembly.
Improperly sealed, hot or cold supply Tighten threaded connections.
connections, relief valve, drain valve
WATER LEAKS or thermostat threads.
Leakage from other appliances or water
Inspect other appliances near water heater.
lines.
Condensation of flue products.
See “CONDENSATION” section.
Thermal expansion in closed water Install thermal expansion tank (DO NOT plug
LEAKING T&P system. T&P valve).
Improperly seated valve. Check relief valve for proper operation
(DO NOT plug T&P valve).
HOT WATER ODORS High sulfate or mineral content in Drain and flush heater thoroughly then refill.
(Refer to SMELLY WATER) water supply.
Bacteria in water supply.
Chlorinate water supply.
WATER TOO HOT Thermostat set too high. Refer to TEMPERATURE REGULATION.
WATER HEATER SOUNDS Condensation dripping on burner. See “CONDENSATION” section.
SIZZLING-RUMBLING Sediment at bottom of heater tank. Clean sediment from tank. Refer to DRAINING
instruction in Maintenance section of manual.
SOOTING Improper combustion. Refer to COMBUSTION AIR AND VENTILATION
on pages 9, 10 and 11.
HEATER LIGHTS BUT Outlet polarity is reversed. Test polarity and correct.
GOES OUT IN 4-5
SECONDS