Richmond
Richmond Water Heaters Error Codes
Complete list of fault codes and troubleshooting guides. Use the search below to find your specific error.
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11
Richmond tankless heater displays error 11 and will not ignite; fan runs but burner does not light.
Ignition Failure
12
Error 12 appears on the Richmond tankless display; burner lights briefly then goes out and unit shuts down.
Flame Failure
13
Richmond tankless heater shows error 13 and shuts down; may be accompanied by loud combustion noise.
Combustion / Flame Rod Signal Abnormal
14
Error 14 appears and the Richmond tankless heater shuts down; unit may feel very hot to the touch.
Overheat / High Temperature Shutdown
16
Richmond tankless heater displays error 16; water may be excessively hot before shutdown.
Outlet Water Over-Temperature
29
Error 29 appears on the Richmond tankless display; unit may run briefly then shut down.
Condensate Drain / Neutralizer Error (Condensing Models)
33
Richmond tankless heater shows error 33 and will not operate.
Air Intake / Combustion Air Thermistor Fault
61
Error 61 appears; Richmond tankless heater fan may not start or may run erratically.
Combustion Fan Motor Fault
65
Richmond tankless heater displays error 65; unit may start then shut down quickly.
Water Flow Control Valve / Bypass Valve Fault
76
Error 76 appears on the Richmond tankless display; remote controller may not respond.
Communication Error Between Main Unit and Remote Controller
90
Richmond tankless heater shows error 90 and shuts down; may be associated with poor combustion.
Combustion Abnormality / Gas Valve or Fan Control Error
99
Error 99 appears and the Richmond tankless heater shuts down immediately after attempting to fire.
Flame Detection / Safety Shutdown
E0
Tankless water heater powers on but does not fire; display shows E0 and unit will not enter normal operation.
Control Board Communication Fault
E0T
Richmond electric tank-type water heater shows E0T on its digital display and does not heat water.
Upper Thermostat / Control Board Fault
E1
Tankless water heater shows E1 and will not ignite; no hot water at any fixture.
Ignition Failure / No Flame Detected
E1T
Richmond electric tank-type heater displays E1T; water is only lukewarm or runs out quickly.
Lower Thermostat / Element Fault
E2
Richmond tankless heater displays E2 and shuts down shortly after attempting to fire.
Flame Loss During Operation
E2T
Richmond electric water heater shows E2T and shuts off; may trip the high-limit frequently.
Over-Temperature / ECO Trip Condition
E3
Tankless heater shows E3 and water temperature fluctuates or unit shuts down during use.
Exhaust Overheat / Flue Temperature High
E3T
Richmond electric water heater displays E3T; unit may not respond to temperature adjustments.
Temperature Sensor / Probe Fault (Electronic Models)
E4
Richmond tankless heater displays E4 and will not maintain set temperature.
Outlet Water Temperature Sensor Fault
E5
Tankless heater shows E5 and shuts down; water may briefly get hot then turn cold.
Inlet Water Temperature Sensor Fault
E6
Richmond tankless heater displays E6 and water temperature is unstable or unit shuts down intermittently.
Heat Exchanger Temperature Sensor Fault / Overheat Sensor Error
E7
Tankless heater shows E7 and will not ignite; fan may run briefly then stop.
Combustion Fan / Fan Speed Error
E8
Richmond tankless heater displays E8 and shuts down; may occur during long hot water draws.
Water Flow Sensor / Flow Rate Error
E9
Tankless heater shows E9 and will not operate; may occur after a power surge or lightning storm.
EEPROM / Internal Control Memory Error
Symptom
No hot water at any fixture; Richmond gas tank-type water heater pilot will not light or stay lit.
Pilot Ignition / Thermocouple Failure
Symptom
Richmond electric water heater has no hot water at all; breaker is not tripped.
Open Heating Circuit / Upper Element or Thermostat Failure
Symptom
Richmond electric water heater provides only a small amount of hot water before turning cold.
Lower Element Not Heating
Symptom
Richmond gas tank-type water heater has a lit pilot but main burner will not ignite; water remains cold.
Gas Control Valve / Thermostat Failure
Symptom
Richmond gas tank-type water heater produces very hot water, risk of scalding, even at low faucet settings.
Overheating / Thermostat Failure
Symptom
Richmond tankless water heater cycles on and off rapidly when a hot water tap is barely open (temperature swings, short cycling).
Low Flow / Minimum Firing Rate Issue
Symptom
Richmond tankless water heater display is blank; unit does not power on at all.
No Power / Control Board Not Energized
Symptom
Richmond tankless water heater display is on but shows no error; unit does not fire when hot water is demanded.
Flow Detection / Demand Signal Failure
Symptom
Richmond tankless water heater does not start when a single low-flow fixture is opened, but works with multiple fixtures.
Minimum Flow Activation Problem
Symptom
Richmond tankless water heater provides hot water for a short time, then turns cold, then hot again (temperature fluctuation).
Temperature Instability / Mixing and Flow Control Issue
Symptom
Richmond water heater causes discolored (rusty or brown) hot water.
Corrosion / Rust Contamination
Symptom
Richmond water heater emits a rotten egg or sulfur smell from hot water taps.
Hydrogen Sulfide Odor in Hot Water
Symptom
Richmond water heater makes a high-pitched whistling or screeching noise when hot water is running.
Flow Restriction / Valve Noise
Symptom
Richmond water heater makes popping or rumbling noises during heating.
Sediment Boiling / Scale on Bottom of Tank or Heat Exchanger
Symptom
Richmond water heater vibrates or bangs when the burner ignites or shuts off (water hammer).
Hydraulic Shock / Water Hammer
Symptom
Richmond water heater's temperature and pressure (T&P) relief valve is dripping or discharging water intermittently.
Overpressure / Overtemperature Relief Activation
Symptom
Water is warm but not hot enough from a Richmond gas tank-type water heater.
Insufficient Heating / Thermostat Misadjustment
Symptom
Water leaking from the bottom of a Richmond tank-type water heater.
Tank Rupture / Drain Valve or T&P Discharge
Symptom
Water leaks from the top of a Richmond tank-type water heater.
Top Fitting / Anode / Cold Inlet Leak
| Error Code | Symptom | Fault Type | Guide |
|---|---|---|---|
| 11 |
Richmond tankless heater displays error 11 and will not ignite; fan runs but burner does not light.
|
Ignition Failure | View Details |
| 12 |
Error 12 appears on the Richmond tankless display; burner lights briefly then goes out and unit shuts down.
|
Flame Failure | View Details |
| 13 |
Richmond tankless heater shows error 13 and shuts down; may be accompanied by loud combustion noise.
|
Combustion / Flame Rod Signal Abnormal | View Details |
| 14 |
Error 14 appears and the Richmond tankless heater shuts down; unit may feel very hot to the touch.
|
Overheat / High Temperature Shutdown | View Details |
| 16 |
Richmond tankless heater displays error 16; water may be excessively hot before shutdown.
|
Outlet Water Over-Temperature | View Details |
| 29 |
Error 29 appears on the Richmond tankless display; unit may run briefly then shut down.
|
Condensate Drain / Neutralizer Error (Condensing Models) | View Details |
| 33 |
Richmond tankless heater shows error 33 and will not operate.
|
Air Intake / Combustion Air Thermistor Fault | View Details |
| 61 |
Error 61 appears; Richmond tankless heater fan may not start or may run erratically.
|
Combustion Fan Motor Fault | View Details |
| 65 |
Richmond tankless heater displays error 65; unit may start then shut down quickly.
|
Water Flow Control Valve / Bypass Valve Fault | View Details |
| 76 |
Error 76 appears on the Richmond tankless display; remote controller may not respond.
|
Communication Error Between Main Unit and Remote Controller | View Details |
| 90 |
Richmond tankless heater shows error 90 and shuts down; may be associated with poor combustion.
|
Combustion Abnormality / Gas Valve or Fan Control Error | View Details |
| 99 |
Error 99 appears and the Richmond tankless heater shuts down immediately after attempting to fire.
|
Flame Detection / Safety Shutdown | View Details |
| E0 |
Tankless water heater powers on but does not fire; display shows E0 and unit will not enter normal operation.
|
Control Board Communication Fault | View Details |
| E0T |
Richmond electric tank-type water heater shows E0T on its digital display and does not heat water.
|
Upper Thermostat / Control Board Fault | View Details |
| E1 |
Tankless water heater shows E1 and will not ignite; no hot water at any fixture.
|
Ignition Failure / No Flame Detected | View Details |
| E1T |
Richmond electric tank-type heater displays E1T; water is only lukewarm or runs out quickly.
|
Lower Thermostat / Element Fault | View Details |
| E2 |
Richmond tankless heater displays E2 and shuts down shortly after attempting to fire.
|
Flame Loss During Operation | View Details |
| E2T |
Richmond electric water heater shows E2T and shuts off; may trip the high-limit frequently.
|
Over-Temperature / ECO Trip Condition | View Details |
| E3 |
Tankless heater shows E3 and water temperature fluctuates or unit shuts down during use.
|
Exhaust Overheat / Flue Temperature High | View Details |
| E3T |
Richmond electric water heater displays E3T; unit may not respond to temperature adjustments.
|
Temperature Sensor / Probe Fault (Electronic Models) | View Details |
| E4 |
Richmond tankless heater displays E4 and will not maintain set temperature.
|
Outlet Water Temperature Sensor Fault | View Details |
| E5 |
Tankless heater shows E5 and shuts down; water may briefly get hot then turn cold.
|
Inlet Water Temperature Sensor Fault | View Details |
| E6 |
Richmond tankless heater displays E6 and water temperature is unstable or unit shuts down intermittently.
|
Heat Exchanger Temperature Sensor Fault / Overheat Sensor Error | View Details |
| E7 |
Tankless heater shows E7 and will not ignite; fan may run briefly then stop.
|
Combustion Fan / Fan Speed Error | View Details |
| E8 |
Richmond tankless heater displays E8 and shuts down; may occur during long hot water draws.
|
Water Flow Sensor / Flow Rate Error | View Details |
| E9 |
Tankless heater shows E9 and will not operate; may occur after a power surge or lightning storm.
|
EEPROM / Internal Control Memory Error | View Details |
| – |
No hot water at any fixture; Richmond gas tank-type water heater pilot will not light or stay lit.
|
Pilot Ignition / Thermocouple Failure | View Details |
| – |
Richmond electric water heater has no hot water at all; breaker is not tripped.
|
Open Heating Circuit / Upper Element or Thermostat Failure | View Details |
| – |
Richmond electric water heater provides only a small amount of hot water before turning cold.
|
Lower Element Not Heating | View Details |
| – |
Richmond gas tank-type water heater has a lit pilot but main burner will not ignite; water remains cold.
|
Gas Control Valve / Thermostat Failure | View Details |
| – |
Richmond gas tank-type water heater produces very hot water, risk of scalding, even at low faucet settings.
|
Overheating / Thermostat Failure | View Details |
| – |
Richmond tankless water heater cycles on and off rapidly when a hot water tap is barely open (temperature swings, short cycling).
|
Low Flow / Minimum Firing Rate Issue | View Details |
| – |
Richmond tankless water heater display is blank; unit does not power on at all.
|
No Power / Control Board Not Energized | View Details |
| – |
Richmond tankless water heater display is on but shows no error; unit does not fire when hot water is demanded.
|
Flow Detection / Demand Signal Failure | View Details |
| – |
Richmond tankless water heater does not start when a single low-flow fixture is opened, but works with multiple fixtures.
|
Minimum Flow Activation Problem | View Details |
| – |
Richmond tankless water heater provides hot water for a short time, then turns cold, then hot again (temperature fluctuation).
|
Temperature Instability / Mixing and Flow Control Issue | View Details |
| – |
Richmond water heater causes discolored (rusty or brown) hot water.
|
Corrosion / Rust Contamination | View Details |
| – |
Richmond water heater emits a rotten egg or sulfur smell from hot water taps.
|
Hydrogen Sulfide Odor in Hot Water | View Details |
| – |
Richmond water heater makes a high-pitched whistling or screeching noise when hot water is running.
|
Flow Restriction / Valve Noise | View Details |
| – |
Richmond water heater makes popping or rumbling noises during heating.
|
Sediment Boiling / Scale on Bottom of Tank or Heat Exchanger | View Details |
| – |
Richmond water heater vibrates or bangs when the burner ignites or shuts off (water hammer).
|
Hydraulic Shock / Water Hammer | View Details |
| – |
Richmond water heater's temperature and pressure (T&P) relief valve is dripping or discharging water intermittently.
|
Overpressure / Overtemperature Relief Activation | View Details |
| – |
Water is warm but not hot enough from a Richmond gas tank-type water heater.
|
Insufficient Heating / Thermostat Misadjustment | View Details |
| – |
Water leaking from the bottom of a Richmond tank-type water heater.
|
Tank Rupture / Drain Valve or T&P Discharge | View Details |
| – |
Water leaks from the top of a Richmond tank-type water heater.
|
Top Fitting / Anode / Cold Inlet Leak | View Details |
No matching codes found
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