| Symptom | Probable Cause | Corrective Action | Service
Procedure |
| Pilot will not light | 1.No incoming gas or too low gas pressure.
2.Gas control knob set to wrong position. 3.Gas control knob not being fully depressed when attempting to light pilot. 4.Pilot orifice or pilot tube is obstructed or kinked. 5.Pilot electrode not sparking to pilot. 6.Piezo igniter not functioning. |
1.Turn on gas supply and/or check line pressure.
2.Review lighting instruction. Set gas control knob to correct position. 3.Review lighting instruction. Fully depress gas control knob. 4.Clean, repair or replace. 5.Verify correct electrode position. Replace pilot assembly. 6.Replace piezo igniter. |
1.See Service
Procedure RG-V 2.See Service Procedure RG-III 3.See Service Procedure RG-III 4.See Service Procedure RG-IV |
| Pilot will not stay lit when button is released | 1.Poor thermocouple
connection at combination thermostat/gas valve. 2.Thermocouple not fully engaged in pilot assembly bracket. 3.Pilot flame is not fully enveloping the thermocouple bulb. 4.Weak or defective thermocouple. 5.Open ECO in combination thermostat/ gas valve. 6.Defective magnet in combination thermostat/gas valve. 7.Resettable thermal switch has opened. |
1.Check connection at combination thermostat/gas valve. Proper tightness should be finger tight + a 1/4 turn.
2.Inspect thermocouple to ensure that it is fully engaged into pilot bracket. 3.Clean pilot orifice and verify pilot tube is clear; check gas supply and line pressure. 4.Check thermocouple and replace if necessary. 5.Check ECO continuity and replace combination thermostat/gas valve if necessary. 6.Check magnet operation and replace combination thermostat/gas valve if necessary. 7.Determine cause of switch activation. To reset, depress button on resettable thermal switch located on inner door. |
1.See Service
Procedure RG-II 2.See Service Procedure RG-V 3.See Service Procedure RG-V |
| Pilot will light but the main burner will not come on | 1.Combination thermostat/gas valve set too low for desired water temperature.
2.Combination thermostat/gas valve temperature is satisfied. 3.Insufficient gas supply or low gas pressure. 4.Combination thermostat/gas valve has wide differential or is out of calibration. |
1.Adjust temperature dial on
combination thermostat/gas valve. 2.Check temperature dial setting on combination thermostat/gas valve. 3.Check gas supply and line pressure. 4.Check combination thermostat/gas valve for proper operation, replace if necessary. |
1.See Installation and Operation
Manual. 2.See Service Procedure RG-V 3.See Service Procedure RG-V |
| Symptom | Probable Cause | Corrective Action | Service
Procedure |
| Pilot goes out periodically (after heating cycles, once a day, once a week etc.) | 1. Insufficient combustion air supply.
2. Incorrect or clogged vent system/vent terminal, or incorrect location. 3. Inconsistent gas supply or gas pressure. |
1. Verify adequate combustion air is available to the unit. Check and clear jacket slot openings of any dirt, dust, restrictions or
other obstructions. Inspect flame arrestor plate and clean with stiff bristled brush and compressed air to remove any debris accumulation. 2. Check venting for proper sizing and proper operation. 3. Check gas supply and line pressure. |
1. See Service
Procedure RG VIII 2. See Service Procedure RG-V |
| Not enough hot water | 1. Combination thermostat/gas valve set too low for desired water temperature.
2. Cold inlet water temperature is very cold. 3. High demand periods. 4. Incorrectly sized water heater for application. 5. Combination thermostat/gas valve is out of calibration/not functioning. 6. Out of spec dip tube is diluting hot water with cold water. |
1. Check dial on combination thermostat/gas valve.
2. Extremely cold water going into the heater will decrease the amount of hot water produced. It may be necessary to temper incoming water supply. 3. Adjust high demand usage. 4. Contact plumbing professional. 5. Check combination thermostat/gas valve for proper operation, replace if necessary. 6. Inspect dip tube and replace if necessary. |
1. See Service
Procedure RG-V 2. See Service Procedure RG-IX |
