Rotex HPSU compact (V5) User Manual

5 x Faults and malfunctions
54
BA ROTEX HPSU compact 2 - 04/2011
Tab. 5-3 Error codes on the main control unit of HPSU compact
J1 Pressure sensor
Malfunction message. Contact a ROTEX service technician.
J3 Thermistor discharge
J5 Temperature sensor suction pipe
J6 Aircoil temperature sensor
J7 Aircoil temperature sensor
J8 Temperature sensor liquid line
Temperature sensor of the fluid line in the external heat pump device (RRLQ) is faulty. Contact a
ROTEX service technician.
L4 Electrical components
Malfunction message. Contact a ROTEX service technician.
L5 Electrical components
L8 Electrical components
L9 Electrical components
LC Electrical components
P1 PCB external heat pump device (RRLQ)
P4 Electrical components
PJ Incorrect capacity setting
U0 Refrigerant loss There is too little or no refrigerant left in the system. Check system for leaks, repair and refill.
U2 Main circuit without power
Malfunction message. Contact a ROTEX service technician.
U4 Communication fault
U5 Communication fault
U7 Communication fault
UA Communication fault
Fault code Component/Designation Fault and possible causes
Respect the maximum tightening torque of 10 Nm for: T
V1
, T
V2
, T
V, BH1
, T
V, BH2
, T
R2
.

Rotex HPSU compact (V5) Specifications

General

Brand	Rotex
Model	HPSU compact (V5)
Category	Heat Pump
Language	English