Vaillant geoTHERM Installation And Maintenance Instructions

Appendix
0020250180_00 geoTHERM Installation and maintenance instructions 35
Code
Meaning
Environment circuit
S.242
Environment circuit: Outlet temperature too low
S.246
Environment circuit: Pressure too low
S.247
Env. circuit: Fault contact: Pump open
Building circuit
S.272
Building circuit: Remaining feed heads limit active
S.273
Building circuit: Flow temperature too low
S.274
Building circuit: Pressure too low
S.275
Building circuit: Flow rate too low
S.276
Building cir.: Lockout contact S20 opened
Refrigeration circuit
S.302
High pressure switch opened
S.303
Compressor outlet temperature too high
S.304
Evaporation temperature too low
S.305
Condensation temperature too low
S.306
Evaporation temperature too high
S.308
Condensation temperature too high
S.311
Environment cir. inlet temperature too low
S.312
Building circuit inlet Return temperature too low
S.313
Environment cir. inlet temperature too high
S.314
Building circuit inlet Return temperature too high
S.315
Compressor circuit breaker open
S.316
WHB support active
S.240
Oil temperature too low
E Fault codes
Code
Meaning Cause
Remedy
F.042
Sensor fault: Coding resistor 1 – Sensor not connected or sensor in-
put has short-circuited
– Check and, if required, replace
the sensor (see sensor charac-
teristic values in the appendix)
– Replace the cable harness
F.042
Sensor fault: Coding resistor 2
F.042
Sensor fault: Coding resistor 3
F.070
Invalid Device Specific Number – Replacing the control PCB and
display PCB
– Checking coding resistors 1 and
2
– Disconnecting the product from
the power supply and switching it
back on again
F.514
Temp. sensor fault: Compressor inlet – Sensor not connected or sensor in-
put has short-circuited
– Check and, if required, replace
the sensor (see sensor charac-
teristic values in the appendix)
– Replace the cable harness
F.517
Temp. sensor fault: Compressor outlet
F.519
Sensor fault: Building circuit return temp.
F.520
Temp. sensor fault: Building circuit flow
F.532
Building circuit: Flow rate too low – Stopcock was not opened
– Building circuit pump defective
– All consumers in the heating system
are closed
– Flow rate is too low for recording
with the volume flow sensor
(< 120 l/h)
– Check the stopcocks and ther-
mostatic valves
– Ensure that there is a minimum
flow rate of 150 l/h
– Check that the building circuit
pump functions correctly

Vaillant geoTHERM Specifications

General

Brand	Vaillant
Model	geoTHERM
Category	Heat Pump
Language	English