Rotex HPSU compact 304 System Instructions

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FA ROTEX RoCon HP - 03/2013
4 x Faults and malfunctions
9012 C4 Fault flow sensor
Temperature sensor heat
exchanger
Temperature sensor heat exchanger of the HPSU compact is
defective.
9013 E1
AG main board
defective
PCB external heat pump
device (RRLQ)
Malfunction message. Contact ROTEX heating technician.
9014 E3
Over-pressure
refrigerant
Pressure in refrigerant
system
Pressure in refrigerant system is too high. System must run within
its operating parameters.
9015 E4
Under-pressure
refrigerant
Low pressure sensor
external heat pump device
(RRLQ)
Low pressure sensor in external heat pump unit (RRLQ) activated.
Check system for loss of refrigerant and if necessary check low
pressure sensor (short circuit).
9016 E5
Load protection
compressor
Overload protection refrig-
erant compressor
Overload protection refrigerant compressor triggered. System
must run within its operating parameters.
9017 E7 Fan blocked
Ventilator block external
heat pump unit (RRLQ)
A Ventilator in the external heat pump device (RRLQ) is blocked.
Check fan for dirt affecting it, the fan may be defective.
9018 E9 Expansion valve
Electronic expansion
valve
The electronic expansion valve in the external heat pump unit
(RRLQ) is faulty.
9019 EC
Hot water temper-
ature > 85 °C
Temperature in internal
hot water tank is too high
The temperature sensor in the hot water storage tank shows a
temperature value of > 85 °C. Check that the temperature sensor
is showing the correct value. 
With installed backup heater: Transfer STB signal booster func-
tion faulty. Check connection. Check switching contactor backup
heater for short circuit.
If booster heater installed: Check switching contactor booster
heater for short circuit.
9020 F3
Over-temperature
evaporator
Discharge temperature on
heat exchanger of the
external heat pump unit
(RRLQ) is too high
The discharge temperature at the heat exchanger of the external
heat pump unit (RRHQ) is getting too high due to a blockage.
Remove possible contamination on the heat exchanger. Contact
ROTEX heating technician if the fault signal persists.
9021 H3 HPS-System
Heat pump system
(only with 11-16 kW sys-
tem)
Internal fault in the heat pump system. Contact ROTEX heating
technician.
9022 H9 Fault AT sensor
Temperature sensor
external heat pump unit
(RRLQ)
External temperature sensor of the external heat pump unit
(RRLQ) is faulty.
9023 HC
Fault storage tank
sensor
Hot water storage tank
temperature sensor
Temperature sensor/connecting cable of storage tank sensor is
faulty.
9024 J1 Pressure sensor Pressure sensor
Malfunction message. Contact ROTEX heating technician.
9025 J3 Fault return sensor Thermistor discharge
9026 J5
Fault suction pipe
sensor
Temperature sensor suc-
tion pipe
9027 J6
Aircoil sensor
defrost
Aircoil temperature
sensor
9028 J7
Aircoil sensor
Temp.
Aircoil temperature
sensor
9029 J8
Fault refrigerant
sensor AG
Temperature sensor liquid
line
Temperature sensor of the fluid line in the external heat pump
device (RRLQ) is faulty. Contact ROTEX heating technician.
9030 L4
Electrical fault
Electrical components
Malfunction message. Contact ROTEX heating technician.
9031 L5 Electrical components
9032 L8 Electrical components
9033 L9 Electrical components
9034 LC Electrical components
9035 P1 Board defective
PCB external heat pump
device (RRLQ)
9036 P4 Electrical fault Electrical components
9037 PJ Output setting Incorrect capacity setting
9038 U0 Refrigerent leak Refrigerant loss
There is too little or no refrigerant left in the system. Check system
for leaks, repair and refill.
9039 U2
Under/ over volt-
age
Main circuit without power Malfunction message. Contact ROTEX heating technician.
Code Error message Component/Designation Fault and possible causes
Display Internal

Rotex HPSU compact 304 Specifications

General

Brand	Rotex
Model	HPSU compact 304
Category	Controller
Language	English