Junkers boilers error codes

Description of codes Junkers boilers errors A3, A4, A7, AC, b1, C1, C4, C6, CC, d1, E0, E2, E9, EA, F7, FA. The Junkers gas boilers have gained great popularity in the gas market of gas systems. These boilers are equipped with a multifunctional management system, which is convenient for the consumer and service staff. The control module is programmed to issue many diagnostic messages, which makes this equipment reliable and simple in repair Junkers and eliminating faults. Junkers gas boilers are as safe as possible in operation and are able to timely warn about the emergence of unsafe situations.

Deciphering codes Junkers boilers errors

• A3 - The error of the temperature sensor NTC traction control. Check the connection circuits of the thermal attemptor.
• A4 - The chimney functions incorrectly. Smoke gases come out. Perhaps the chimney is clogged or the fan will not be drunk.
• A7 - The chimney functions incorrectly. Smoke gases come out. Perhaps the chimney is clogged or the fan does not spin.
• AC - Check the cable between the TA211 and the printed circuit board.
• b1 - The switching plug is inserted incorrectly or its contacts are oxidized.
• C1 - There is no air flow in the smoke -outlet canal. The fan does not rotate, the fan blades, wear of the fan bearings are closed. During the operation of the boiler, a differentiation switch worked.
• C4 - The contact of a differentiation microsword is always closed. Check the air vent.
• C6 - The contact of a differentiation microsword is always open. Check the air vent.
• CC - The temperature sensor of the outer temperature in the cliff. Check the sensor connection cable.
• d1 - The LSM 4 chain is damaged. The response voltage does not come.
• E0 - Probably the most popular error of Junkers boiler is a failure in the operation of the electronic module. Check the printed paths of the oxidation and moisture oxidation.
• E2 - Cliff circuit of the pipeline sensor. Check the sensor connectors for the oxide, the integrity of the insulation of the cable, call the cable veins for the cliff.
• E9 - The situation is overheating. Before repair Junkers boilers, it is imperative to check the water level in the heating system, the presence of air in the system. Check the temperature sensor in the system, its connection circuit. The performance of the pump, the fan.
• EA - There is no signal from the flame sensor. Perhaps a gas valve is blocked, or inappropriate quality of the supply of gas, low gas pressure. The ionization electrode, the connection circuits are faulty.
• F7 - An incorrect signal from the ionization electrode. Perhaps a parasitic flame or the electrode sensor is faulty. Check the connection circuit of the ionizer sensor.
• FA - After turning off the regulator of the ionization electrode, there is a flame on the burner. Check the flame sensor, the connection circuit of the sensor to the cliff, insulation damage, and soot.