Service point-Tel: (400-08 18-378- Wuchang Factory Maintenance Point, 027-5 123-86 18) Professional maintenance of gas water heaters does not ignite.
Troubleshooting method: l
1, with booster pump;
2. Remove sundries;
3. Reinstall the power supply;
4. Reinstall or replace the new power supply;
5. Reinstall the inlet pipe and outlet pipe;
Second, after opening the water valve, the pulse ignites but does not catch fire.
Cause analysis of water heater failure;
1, air in trachea;
2. Insufficient power supply voltage;
3. The air switch is not turned on or the air inlet screen is blocked.
4. The gas types do not match;
5. The valve seal expands after being corroded by gas;
6, cylinder pressure reducing valve output pressure is too high or too low;
Maintenance method of water heater: 1,
Repeatedly open and close the water valve to discharge air until it catches fire;
2. Replace the new power supply;
3. Turn on all air switches.
5. Replace the valve seal; 6, check and adjust the output pressure;
Third, there is a deflagration sound during ignition.
Cause analysis of water heater failure: l, the pressure of cylinder pressure reducing valve is too high;
2. The power supply voltage is too low; 3, ignition needle carbon or dirty;
4, the ignition needle position is not straight or too far away from the burner;
5. The corresponding burner holes and nozzles are blocked by ignition;
Maintenance method of water heater: 1. Adjust the pressure of the cylinder pressure reducing valve;
2. Replace the new power supply;
3. Remove dirt;
4, adjust the ignition needle installation position;
5. Remove the sundries blocked by the air outlet and nozzle;
Fourthly, the water is not hot enough during use.
Cause analysis of water heater failure;
1, cylinder pressure reducing valve is damaged or air flow is insufficient;
2. The air switch has foreign body or semi-blockage;
3. The gas master switch is half open;
4. The air intake nozzle and air pipe are too thin or too long, resulting in insufficient air flow;
5. The gas types do not match;
6, the water pressure is too high, the hydraulic stability system failure;
Maintenance method of water heater:
1, replace the qualified pressure reducing valve;
2. Remove foreign bodies;
3. Turn on the main switch completely;
4. Replace the gas nozzle and gas pipe;
5. No use;
6. Semi-close the water inlet valve to reduce the water pressure;
Five, often flameout during use.
Fault analysis of gas water heater;
1, the water pressure is low and the water pressure fluctuates greatly;
2. Insufficient indoor air supply;
3. Insufficient power supply voltage or poor contact;
4, the water output is too small, the water temperature is too high, and the overheating device is protected;
Maintenance method of gas water heater;
L, turn the water knob to the appropriate position or low water level position;
2, should be reloaded to ensure adequate air supply;
3. Replace the new power supply or reinstall it;
4. Turn the water knob to a suitable position or flood position;
Six, the flame is yellow and black smoke.
Cause analysis of water heater failure;
1, the burner has dirt or its ejector tube has dirt;
2. The cylinder gas is used up;
3. Insufficient indoor air supply;
4. The gas types do not match; 5. The air pressure is high or low;
Maintenance method of water heater:
1, removing dirt and carbon;
2. Replace the steel cylinder with liquefied gas;
3, should be reloaded to ensure adequate air supply;
4. Prohibition of use;
5, adjust or replace the qualified pressure reducing valve
1, insufficient pressure fault
Fault phenomenon: the water pump does not operate, the controller sounds abnormal, and the display screen shows that the fault code is insufficient pressure.
Reason for failure:
A) the pipeline is short of water, and the pressure gauge shows that the pipeline water pressure is insufficient.
B) pressure switch failure.
C) There is a lot of air in the pipeline system.
Solution:
A) water supply pipeline is short of water; If the pipe leaks, try to stop it.
B) check with a multimeter. If the pressure switch is not connected, replace the pressure switch; If the contact is poor, reconnect; If the line is open, replace the wire; If you insert the wrong terminal, please press the correct connection.
C) Drain the piping system.
2, pipeline water shortage fault
① Fault phenomenon: the water pump does not operate, the fan does not operate, the controller sounds abnormal, and the fault code displayed on the display screen is water shortage in the pipeline.
Reason for failure:
A) the water pump power cord falls off
B) the water pump is not locked for a long time.
Solution:
A) Use a multimeter to check whether the output power of the water pump is normal and whether the contact is good. If the controller has no voltage output, it is a controller failure, and the controller is replaced; If the controller has voltage output and the water pump has no electricity, it means that the connector has fallen off, poor contact or broken wire; If you drop it, contact me again. If the contact is not good, I will contact you again. If the wire is disconnected, it will be replaced.
B) If the water pump has voltage input, it may be locked. Unscrew the screw on the water pump and turn the shaft of the water pump with a screwdriver to make the rotor of the water pump rotate and return to normal; If the water pump is not locked, use a multimeter to detect the open circuit or short circuit of the water pump, indicating that the water pump is burnt out and needs to be replaced.
(2) Fault phenomenon: the water pump is running, the fan is not running, the controller is abnormal, and the display screen shows the pipeline power failure code.
Reason for failure:
A) The air in the water pump is not exhausted, which leads to the idling of the water pump.
B) The distributor of the heating system is not opened or the filter is blocked.
C) there is air in the pipeline.
D) water flow switch failure.
E) The pressure difference generated by the pipeline of differential pressure machine is not enough.
Solution:
A) Unscrew the slotted copper screw on the end face of the water pump, exhaust the air in the water pump, and restart.
B) If the distributor of the heating system is not opened, the distributor is opened; If the filter is blocked, remove the filter, rinse, install, replenish water and exhaust, and restart.
C) If there is air in the pipeline and it is not exhausted, restart it after exhausting.
D) water flow switch fault with multimeter to detect whether there is a switch signal output in the operation. If there is a signal output, the water flow switch is connected, maybe the connector is not connected properly, or the wire is disconnected, then connect the connector or replace the wire; If the wires and connectors are in good condition, the controller is faulty and replaced. If there is no signal output, the water flow switch is stuck or the waterway is blocked; If water flow switch gets stuck, remove the water flow switch, rinse it and put it back in its original place; And hydration. Exhaust and restart; Waterway blockage should be handled according to method B.
E) Install a distributor (switch) at the heating outlet and turn it down.
3, fan wind pressure fault
① Fault phenomenon: the fan is not running or running slowly, the controller sounds abnormal, and the display screen shows the fan wind pressure fault code.
Reason for failure:
A) The fan is stuck or burnt out;
B) poor contact of the connector
C) controller failure
D) capacitor damage
E) the main pressure is too low.
Solution:
A) Check the fan with a multimeter, replace the fan when disconnected, and replace the fan when stuck.
B) The connector is poorly contacted and reconnected.
C) If the controller fails, replace the controller.
D) If the fan impeller can be started by hand, the capacitor will be damaged and need to be replaced.
E) install the voltage regulator and increase the power supply voltage to 220V.
② Fault phenomenon: the fan is running normally, the controller does not ignite, the voice of the main controller is abnormal, and the display screen shows that the fault code is fan air pressure fault.
Reason for failure:
A) wind pressure switch short circuit
B) the wind pressure switch is not turned off.
C) poor connector contact.
D) The suction port and exhaust port are blocked.
E) controller failure.
Solution:
A) check with a multimeter. If the wind pressure switch is turned off before the fan starts, replace the power supply or adjust the wind pressure switch.
B) If the fan is normal before starting and does not turn off after starting, the air pressure switch can be adjusted. If the problem cannot be solved after adjustment, please replace the air pressure switch. ; In addition, check whether the venturi tube or the wind pressure tube is blocked.
C) If the connector has poor contact, please reconnect it.
D) If all the previous faults are eliminated, check whether the air intake and exhaust are unblocked or blocked; If the suction and exhaust are not smooth, clean the flue, if it is blocked, clean it.
E) If faults A, B, C and D have been eliminated, check whether the pulse igniter connector is in good contact and whether the main controller has a voltage of 4.5V If the contact is poor, the connection is good; If there is 4.5V output, replace the pulse igniter; If there is no 4.5V output, please replace the main controller.
1, ignition failure fault
Fault phenomenon: the pulse igniter ignites normally, but does not ignite, the main controller sounds abnormal, and the display screen shows the ignition fault code.
Reason for failure:
A) The ignition spark is weak due to the breakage of the insulating porcelain body of the ignition needle or the looseness of the metal needle.
B) Abnormal power supply to the air valve causes the solenoid valve to fail to open.
C) proportional valve ignition current adjustment is unreasonable.
D) small fire of sectional valve and unreasonable gas flow adjustment.
E) Foreign matters accumulated in the gas valve make it start badly.
F) The rubber eardrum of proportional valve is bad.
G) solenoid valve coil is damaged (short circuit or open circuit).
H) gas pressure is too high or too low.
I) Connect the high-speed and low-speed cables of the two-speed fan.
J) The relevant parameters of the ignition needle are incorrect.
Solution:
A) replace the ignition needle.
B) replace the main controller.
C) Adjust the reasonable ignition current of proportional valve.
D) Adjust the reasonable small fire gas flow of the sectional valve.
E) Remove foreign bodies from the air valve.
F) Replace the gas valve.
G) replace the solenoid valve.
H) Adjust the gas pressure to the rated pressure.
I) Connect the high-speed and low-speed cables of the two-speed fan correctly.
J) If the ignition needle is too large or too small, adjust it to 3 ~ 4mm；; Adjust or replace the ignition needle when the direction of the ignition needle deviates seriously, and adjust it reasonably when the distance between the ignition needle and the burner is too far.