Name: PCB Vaillant Turbomag MAG ES PT 14 2 0 H R1 Ref. 0020251359
Brand: Vaillant
SKU: PEVMAG1429
Price: 100 EUR
Availability: InStock

Question 1

How do I know if this PCB is for my boiler?

Accepted Answer

Verify the reference 0020251359 printed and ensure your model is on the list of compatible ones; also compare the connections with the original part.

Question 2

What is it used for?

Accepted Answer

The PCB controls the ignition, modulation, sensor readings, and safety features of the boiler.

Question 3

Is the boiler not igniting, locking out, or is the control board unresponsive?

Accepted Answer

After ruling out mains voltage, fuse, and connectors, a damaged PCB causes lockouts, blackouts, or erratic display. Repair the external cause before installing the new one.

Question 4

Which models is it suitable for?

Accepted Answer

Part shared by various models (see Compatibility). If your model does not appear, send us a photo of the marking and we will confirm it.

Question 5

Installation and recommendations

Accepted Answer

After installation, a technician must adjust the service parameters (type of gas, power settings) and check combustion and safety features.

Question 6

What does refurbished mean and what coverage does it have?

Accepted Answer

Part removed from a boiler out of service, inspected and tested. Includes 1-year warranty and 14-day return policy. Delivery within 2–4 working days in the EU.

Question 7

What does the fault code F.20 mean in Vaillant?

Accepted Answer

Safety cut-off temperature limiter. The PCB may incorrectly interpret/manage the input from the limiter (thermal fuse) and trigger the safety. Check by bridging the limiter according to the manual and, if wiring/sensor are OK, measure the input on the board or replace the PCB.

Question 8

What does fault code F.27 mean in Vaillant?

Accepted Answer

Safety lockout due to flame simulation. Moisture/damage in the PCB electronics can simulate an ionization signal. Check by drying, checking continuity/voltages of the board and the electrode; if it persists, replace the PCB.

Question 9

What does the fault code F.37 mean in Vaillant?

Accepted Answer

Fan speed difference fault. The PCB powers and reads the fan (power/PWM and tacho signal); a driver or reading fault on the board triggers the code. Check 12 V/PWM and speed signal at the board connectors (e.g., X30/X91) and, if the fan/harness are fine, replace the PCB.

Question 10

What does the fault code F.57 mean in Vaillant?

Accepted Answer

Measurement program fault. Internal electronic error; if it persists after a reset, the PCB is defective. Check supply voltages and continuity; replace the PCB if it does not start.

Question 11

What does fault code F.63 mean in Vaillant?

Accepted Answer

EEPROM fault. EEPROM memory of the PCB corrupted/damaged. Check reset and power supply stability; if the fault persists, replace the PCB.

Question 12

What does fault code F.166 mean in Vaillant?

Accepted Answer

Communication fault. Fault in the communication electronics of the PCB (e.g., bus/display). After ruling out interruptions in the harness, levels, and connectors, replace the PCB.

Question 13

What does fault code F.168 mean in Vaillant?

Accepted Answer

Fault in the water escape sensor. The analogue input on the PCB may fail and erroneously detect a leak. If the sensor/wiring are OK or bridging the sensor makes it disappear, replace the PCB.

Question 14

What does fault code F.171 mean in Vaillant?

Accepted Answer

Fault: fan. The PCB controls the power/control of the fan; a faulty driver/power supply on the board causes the code. Check 12 V and control signal from the PCB before replacing it.

Question 15

What does fault code F.197 mean in Vaillant?

Accepted Answer

Supervision protection fault. Fault in the control/monitoring electronics on the PCB. If the appliance does not start after a reset, replace the board according to the manual.

Code	What does it mean?	Cause and diagnosis (this part)
F.20	Safety temperature limiter disconnection.	The PCB may incorrectly interpret/manage the input from the limiter (thermal fuse) and trigger the safety. Check by bridging the limiter according to the manual and, if the wiring/sensor are OK, measure the input on the board or replace the PCB.
F.27	Safety lockout flame simulation.	Moisture/damage in the PCB electronics can simulate an ionization signal. Check by drying, checking continuity/voltages of the board and the electrode; if it persists, replace the PCB.
F.37	Fan speed difference fault.	The PCB powers and reads the fan (power/PWM and tach signal); a driver fault or reading on the board triggers the code. Check 12 V/PWM and speed signal at the board connectors (e.g., X30/X91) and, if the fan/harness are fine, replace the PCB.
F.57	Measurement program fault.	Internal electronic error; if it persists after a reset, the PCB is defective. Check supply voltages and continuity; replace the PCB if it does not start.
F.63	EEPROM fault.	Corrupted/damaged EEPROM memory of the PCB. Check reset and power supply stability; if the fault persists, replace the PCB.
F.166	Communication fault.	Fault in the communication electronics of the PCB (e.g., bus/display). After ruling out interruptions in the harness, levels, and connectors, replace the PCB.
F.168	Fault in the water escape sensor.	The analogue input on the PCB may fail and incorrectly detect a leak. If the sensor/wiring are OK or bridging the sensor makes it disappear, replace the PCB.
F.171	Fault: fan.	The PCB controls the power/control of the fan; a faulty driver/power supply on the board causes the code. Check 12 V and control signal from the PCB before replacing it.
F.197	Supervision protection fault.	Fault in the control/monitoring electronics on the PCB. If the appliance does not start after a reset, replace the board according to the manual.

PCB Vaillant Turbomag MAG ES PT 14 2 0 H R1 Ref. 0020251359

Key Data

MAG ES/PT 11-2/0 (TurboMAG)

MAG ES/PT 14-2/0 (TurboMAG)

MAG ES/PT 16-2/0 (TurboMAG)

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