Read the fault code of Wanjiale/Yunmi/Emperor/Sakura/True Love Good Wife gas water heater in one article

1. Wan Jiara

(1) The E0 water inlet sensor connector is loose; It is necessary to re-plug it, check the sensor assembly, and check the main control board;

(2) E1 ignition fails or stalls midway

1. E1 appears as soon as the machine is turned on, and the fan has no action;

(1) Internal short circuit caused by moisture in the pulser; After confirmation, replace the pulser and make it waterproof;

(2) The feedback circuit of the main control board is faulty, and after the diode feedback signal is simulated and confirmed, the ignition wire and ignition distance are rearranged, and then the main control board is replaced;

(3) There is a foreign object on the surface of the feedback needle with unidirectional electrical characteristics, after inspection and confirmation, clean the feedback needle and move the installation position of the feedback needle forward;

2. E1 appears during ignition

(1) The connector is loose or has poor contact with the ground;

(2) Feedback short circuit: the insulation performance of the feedback pin is reduced due to moisture and other reasons, and the feedback pin or line is to the ground, such as replacing the plastic seat feedback pin and moving the installation position forward;

(3) No ignition: pulsator failure; Replacement required;

(4) Non-combustible: there is air in the gas pipe, fire several times; Incorrect ignition distance and broken parts lead to crossfire;

(5) No gas: solenoid valve failure, gas source not opened, thermostat or water tank high temperature protection fuse damaged;

(6) Main control board failure; After using diode feedback signal simulation confirmation, rearrange the ignition wire and ignition distance, and then replace the main control board;

3. It has been ignited, and E1 appears in the middle of the work

(1) Flame: insufficient gas, gas path throttling, flue gas return, insufficient air intake, poor smoke exhaust from the smoke pipe;

(2) During work, condensate drips to the feedback needle, resulting in a short circuit of the feedback signal, replace the plastic feedback needle and move the installation position forward.

(3) The speed of the E2 motor is too low or the wind pressure is abnormal

1. Thermocouple protection: the connector is loose and needs to be adjusted; If the smoke pipe exceeds 3 meters, the length of the exhaust pipe needs to be reduced; The water tank is blocked, the tank needs to be cleaned; If the temperature at the thermocouple is too high, it is necessary to adjust the thermocouple gear of the motherboard or the secondary pressure of the gas; The anti-inverted air connector is not properly installed and needs to be adjusted; The thermocouple is damaged and needs to be replaced;

2. Water control switch failure: the microswitch fork does not reset; Adjustments required;

(4) E3 overheating protection

1. If the thermostat fails or the water temperature is too high, ask the user whether the water temperature is high when the fault occurs;

2. The voltage drop fan runs at low speed during the peak of electricity consumption, and the door-to-door inspection is carried out during the product failure period, and the model is replaced if necessary;

3. The anti-inverted air joint is improperly installed and needs to be adjusted;

4. Pressure sampling failure: sampling port blockage, sampling tube or connector loose;

5. Poor smoke exhaust: the smoke pipe exceeds 3 meters and 3 bends, the water tank or wind wheel is blocked, etc., or the outdoor wind is affected;

6. Capacitor, or motor, or wind pressure switch failure; Replacement required;

(5) E4 temperature probe short circuit or open circuit

1. The voltage drop fan runs at low speed during the peak of electricity consumption, and the door-to-door inspection is carried out during the product failure period to explain to the user;

2. The fan wiring plug is loose;

3. Capacitor or motor failure, fan Hall failure, DC fan transformer no driving voltage output, whether the motor parts have short circuit, leakage phenomenon, main control board failure; Faulty parts need to be replaced;

(6) E5 protection when the temperature of hot water exceeds 85 °C

1. Check the gas pressure, water pressure and water quantity;

2. Water sensor failure;

(7) E6 False fire or residual fire; It is necessary to check the loose connection of the hot water sensor, check the sensor assembly, and check the main control board;

(8) The E7 DIP SW gas type or model is selected incorrectly

1. DIP SW gas model or model selection is wrong; Need to check and confirm and adjust;

2. Motherboard failure caused by poor code contact; Replace the main control board after inspection and confirmation;

(9) E9 stepper motor or limit switch failure

1. Limit switch failure; Need to adjust the limit piece or replace;

2. The gas valve core is stuck; The gap between active and passive gears is small and jamming; failure of the main control board; Faulty parts need to be replaced;

2. Yunmi

E0 temperature probe open or short; Need to check the connector, temperature sensing head, main control board;

E1 ignition failure/unexpected flameout; It is necessary to check the gas, valve body wire, flame induction needle, main control grounding wire, and each lead; The resistance of the valve body is about 100 ohms;

E2 pseudo-fire failure; Need to power off and restart, check the flame sensor needle, whether there is a short circuit to the ground, and whether there are impurities between the fire exhaust and the induction needle;

E3 overtemperature protection or open thermostat; Need to wait for the machine to drop to normal temperature before starting, check that the thermostat is loose, if the two temperature control lines connected to the machine can work, you need to replace the main control board;

E5 communication failure; Need to power off and restart, reseat the operation board and the main control board leads, if the two temperature control lines are connected to the machine can work, the main control board needs to be replaced;

E6 overtemperature protection or open thermostat; Need to wait for the machine to drop to normal temperature before starting, check that the thermostat is loose, if the two temperature control lines connected to the machine can work, you need to replace the main control board;

E7 wind pressure failure or abnormal fan speed; Need to power off and restart, check that the flue does not exceed 3 meters and 3 bends, the fan connection line is loose, and the fan is stuck or faulty;

EH return failure; It is necessary to clean the filter screen of each port of the check valve, whether it is iced, whether it is installed backwards, and whether the water flow sensor is working normally;

Eb water pump failure; Check whether the wiring is loose, iced, stuck or faulty;

III. The Emperor

E0 Temperature sensor failure

E1 ignition failed

E2 stalled unexpectedly

E3 Ultra temperature failure

E4 wind block/wind pressure switch failure

E5 solenoid fault

E6 Ember Failure

E7 fan failure

E9 dry burn failure

En Over-timed time protection; Need to power off and restart;

4. Cherry blossoms

E0 NTC open, short or open

E1 ignition failed

E2 stalled unexpectedly

E3 Ultra temperature failure

E4 ventilation system/air pressure

The E5 solenoid valve is open or shorted

E6 Ember Failure

E7 fan failure

E8 butterfly valve open circuit, short circuit

E9 anti-dry burning device action

EE blackout protection

5. True good wife

E0 Temperature Sensor/Water Flow Sensor Failure

E1 ignition failed

E2 accidentally stalled; Automatic recovery;

E3 overtemperature fault; Automatic recovery;

E4 wind block/wind pressure switch failure

E5 solenoid fault

E6 Ember Failure

E7 fan failure

E9 dry burn failure; Automatic recovery;

EE power outage protection; Automatic recovery;

En Over-timed time protection; Automatic recovery;

END!