A.O. Smith AOSRG45200 User Manual

10

Improperly sealed, hot or cold supply connections,

relief valve, drain valve or thermostat threads.

Leakage from other appliances or water lines.

Condensation of flue products.

Thermal expansion in closed water system.

Improperly seated valve.

High sulfate or mineral content in water supply.

Bacteria in water supply.

Dirty pilot burner.

Thermocouple tip is not in contact with pilot flame.

Thermocouple malfunction.

Thermocouple malfunction.

Gas knob dial not positioned correctly.

Pilot orifice clogged.

Pinched or clogged pilot tube.

Main gas supply off.

Heater not lit or thermostat not on.

Thermostat set too low.

Heater undersized.

Low gas pressure.

Incoming water is unusually cold.

Leaking hot water pipes or fixtures.

High temperature limit switch activated.

Thermostat set too high.

Condensation dripping on burner.

Sediment at bottom of heater tank.

Improper combustion

Tighten threaded connections.

Inspect other appliances near water heater.

Refer to CONDENSATION.

Install thermal expansion tank (DO NOT plug T & P valve).

Check relief valve for proper operation (DO NOT plug T & P valve).

Drain and flush heater thoroughly, then refill.

Chlorinate water supply.

Clean pilot assembly.

Insert thermocouple correctly.

Replace thermocouple.

Check thermostat.

Refer to LIGHTING INSTRUCTIONS.

Clean or replace pilot orifice.

Replace pilot tube.

Turn on main gas shutoff valve.

Refer to LIGHTING INSTRUCTIONS.

Refer to TEMPERATURE REGULATION

Reduce hot water use.

Contact dealer.

Allow more time for heater to re-heat.

Have plumber check and repair leaks.

Contact dealer to determine cause. See HIGH TEMPERATURE LIMIT SWITCH note below.

Refer to HIGH TEMPERATURE REGULATION

Refer to CONDENSATION above.

Clean sediment from tank. Refer to DRAINING instructions in Maintenance section of manual.

Refer to AIR REQUIREMENTS on page 4.

WATER LEAKS

LEAKING T & P

HOT WATER ODORS

(Refer to CATHODIC PROTECTION,)

PILOT OUTAGE

PILOT WILL NOT LIGHT

NOT ENOUGH OR NO HOT WATER

WATER TOO HOT

WATER HEATER SOUNDS:

SIZZLING·RUMBLING

SOOTING

Please check guidelines below.  For your safety, water heater service should be performed only by a qualified service technician.  Read the
GENERAL SAFETY INFORMATION section first.