State GS6 75 YRVHTL - Manual (Page 52)

These guidelines should be utilized by a qualifi ed service agent.
PROBLEM POSSIBLE CAUSE(S) CORRECTIVE ACTION
BURNER FLAME
TOO HIGH
1. Air inlets blocked
2. Insuffi cient secondary air
3. Orifi ce too large 1. Unblock inlet air openings
2. Provide ventilation to water heater
3. Replace with correct orifi ce
FLAME BURNS
AT ORIFICE
1. Low gas pressure
2. Defective gas control valve/thermostat 1. Check with gas utility company
2. Replace gas control valve/thermostat
INSUFFICIENT
HOT WATER
1. Low gas pressure
2. Orifi ce too small
3. Thermostat set too low
4. Gas control error codes
5. Sediment or lime in tank
6. Water heater too small
7. Wrong piping connections
8. Leaking
faucets
9. Wasted hot water
10. Long runs of exposed piping
11. Hot-water piping in outside wall
1. Check with gas utility company
2. Replace with correct orifi ce (see rating
plate)
3. Turn temperature knob to higher setting
4. Refer to gas control error codes
5. Drain/fl ush-provide water treatment if
needed
6. Install adequate heater
7. Correct piping: dip tube must be in cold
inlet
8. Repair faucets
9. Advise customer
10. Insulate piping
11. Insulate piping
WATER IS TOO HOT
1. Thermostat is too high
2. Defective gas control valve/thermostat 1. Turn temperature knob to lower setting
2. Replace the gas control valve/
thermostat
SLOW HOT WATER
RECOVERY
1. Insuffi cient air/ fl ue blockage
2. Low gas pressure
3. Orifi ce too small
4. Thermostat set too low
5. Heater too small
6. Wrong piping connection
7. Wasted hot water
8. Flue
clogged
9. Air inlets blocked
1. Provide ventilation to water heater.
Check fl ue way, fl ue baffl e and burner
2. Check with gas utility company
3. Replace with correct orifi ce (see rating
plate)
4. Turn temperature knob to higher setting
5. Install adequate heater
6. Correct piping-dip tube must be in cold
inlet
7. Advise customer
8. Clean fl ue, locate source and correct
9. Unblock inlet air openings
DRIP FROM
RELIEF VALVE
1. Pressure build-up
2. Heater stacking
3. Closed water system
4. Improperly seated valve
1. Use a pressure-reducing valve and
relief valve
2. Lower the thermostat setting
3. See thermal expansion section
4. Check Relief valve for proper operation
(Do Not plug T&P valve)
GAS CONTROL VALVE/
THERMOSTAT FAILS TO
SHUT OFF
1. Defective gas control valve/thermostat 1. Replace gas control valve/thermostat
SMELLY WATER
1. Sulfi des in water supply
2. Bacteria in water supply
3. Incompatible
anode
1. Chlorination procedure
2. Chlorination procedure
3. Replace with anode appropriate for
water conditions
TROUBLESHOOTING GUIDELINES
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