Vaillant ecoTEC plus VUI Series, Инструкция по установке и обслуживанию

Страница: 74 / 100

74
Installation and maintenance instructions 0020308121_04
Code/meaning Possible cause Measure
F.013
The cylinder temperature
sensor has short-circuited.
Fault in the electrical connection
for the cylinder temperature
sensor
▶
Check and, if required, replace the wiring harness between the
PCB and sensor, including all plug connections.
Cylinder temperature sensor
defective
▶
Check and, if required, replace the cylinder temperature
sensor.
F.020
The safety cut-out (SCO) inter-
rupts the gas valve control. The
gas valve was closed because
the temperature of the flow or
return temperature sensor has
exceeded the maximum limit.
Insufficient/no water in the
product. 1. Fill the heating installation.
2. Check the product and the system for leakages.
Fault in the electrical connection
for the flow temperature sensor
▶
Check and, if required, replace the wiring harness between the
PCB and sensor, including all plug connections.
Fault in the electrical connec-
tion for the return temperature
sensor
▶
Check and, if required, replace the wiring harness between the
PCB and sensor, including all plug connections.
Flow temperature sensor de-
fective
▶
Check and, if required, replace the flow temperature sensor.
Return temperature sensor de-
fective
▶
Check and, if required, replace the return temperature sensor.
The pump is defective.
▶
Check and, if required, replace the pump.
3-port diverter valve defective or
blocked
▶
Check and, if required, replace the 3-port diverter valve.
Water pressure sensor defect-
ive
▶
Check and, if required, replace the water pressure sensor.
Volume flow sensor defective
▶
Check and, if required, replace the volume flow sensor.
Black discharge via the ignition
cable, ignition plug or ignition
electrode
▶
Check the ignition cable, ignition plug and ignition electrode.
F.022
No/insufficient water in the
product or the water pressure is
too low.
Insufficient/no water in the
product. 1. Fill the heating installation.
2. Check the product and the system for leakages.
Fault in the electrical connection
for the water pressure sensor
▶
Check and, if required, replace the wiring harness between the
PCB and sensor, including all plug connections.
Cable for the pump/for the wa-
ter pressure sensor is loose/not
connected/defective
▶
Check the cable for the pump/for the water pressure sensor.
Water pressure sensor defect-
ive
▶
Check and, if required, replace the water pressure sensor.
Pump operation interrupted
▶
Check and, if required, replace the cable to the pump/to the
water pressure sensor.
Solenoid valve for the automatic
filling device defective
▶
Check the automatic filling device and replace it, if necessary.
Internal expansion vessel de-
fective
▶
Check the internal expansion vessel and replace it, if neces-
sary.
F.023
The temperature spread
between the flow/return is too
great.
Air in the product
▶
Purge the heating installation.
Fault in the electrical connection
for the flow temperature sensor
▶
Check and, if required, replace the wiring harness between the
PCB and sensor, including all plug connections.
Fault in the electrical connec-
tion for the return temperature
sensor
▶
Check and, if required, replace the wiring harness between the
PCB and sensor, including all plug connections.
Flow temperature sensor de-
fective
▶
Check and, if required, replace the flow temperature sensor.
Return temperature sensor de-
fective
▶
Check and, if required, replace the return temperature sensor.
Pump blocked
▶
Check that the pump is working correctly.
Pump runs with insufficient out-
put
▶
Check that the pump is working correctly.
3-port diverter valve defective or
blocked
▶
Check and, if required, replace the 3-port diverter valve.
Internal expansion vessel de-
fective
▶
Check the internal expansion vessel and replace it, if neces-
sary.
F.024
The temperature increases too
quickly.
Air in the product
▶
Purge the heating installation.
System pressure too low
▶
Check the system pressure.
Fault in the electrical connection
for the flow temperature sensor
▶
Check and, if required, replace the wiring harness between the
PCB and sensor, including all plug connections.