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TROUBLE SHOOTING (Continued)
PROBLEM CAUSE SOLUTION
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) Thermostat defective. Replace thermostat.
E) Control harness defective. Replace control harness.
F) High limit control circuit open. Replace thermostat.
NOT ENOUGH G) Blower motor defective. Replace Blower Assembly.
HOT WATER Thermostat problems.
A) Thermostat set too low. Turn temperature control higher.
B) Thermostat or ECO defective. Replace thermostat.
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) Defective air flow restrictor. Take unit out of service immediately, call the
manufacturer’s representative.
B) Not enough dilution air to mix with Proper dilution air must be provided for
VENT PIPE TOO HOT flue gases. combustion and dilution of flue temp.
(ABOVE 170°F) Refer to “INSTALLATION” section.
C) Dilution air too hot for mixing with Supply air is too hot. Check for heat sources
flue gases. around and/or blockage of dilution air intake.
D) 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
combustion. or blockage.
A) Water on the floor under heater. See “CONDENSATION” section.
B) Water dripping from blower assembly. Install condensate drain hose (supplied locally)
CONDENSATION on drain port of rubber boot of blower assembly
or provide a drip “TEE” in the vent pipe to catch
the condensation. See figure 1 and the
Installation of Vent System instructions.
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.
water lines.
Condensation of flue products. Refer to “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 CATHODIC water supply.
PROTECTION Bacteria in water supply. Chlorinate water supply.
WATER TOO HOT Thermostat set too high. Refer to HIGH TEMPERATURE REGULATION.
WATER HEATER SOUNDS Condensation dripping on burner. Refer to CONDENSATION above.
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 AIR REQUIREMENTS on page 4.
HEATER LIGHTS Outlet polarity is reversed. Test polarity and correct.
BUT GOES OUT
IN 4-5 SECONDS