Rotex HPSU compact (V5) Installation And Maintenance Manual

62
FA ROTEX HPSU compact (V5) • 
8 x Errors, malfunctions and messages
E9014 E3 Coolant over-
High pressure switch
S1PH in the coolant sys-
tem
Pressure in refrigerant system
is too high.
– High pressure switch S1PH or ventilator motor defective.
Ɣ Check, replace.
– Poor cable contact.
– Flow in the heating system too low.
– Filled coolant quantity too high.
Ɣ Ch
eck, replace.
– Service valve in the heat pump exterior unit not open.
Ɣ Service
valve open.
E9015 E4 Coolant under-
Pressure sensor S1NPH
in the hea
t pump exterior
unit
Pressure in the coolant system is too low.
– Coolant quantity too low.
Ɣ Check, correct cause, refill coolant.
– Pressure sensor S1NPH in the hea
t pump exterior unit defec-
tive.
– Temperature sensor lamella heat exchanger R4T in the heat
pump exterior unit defective.
– Solenoid valve in the heat pump exterior unit not open.
– Main board in the heat pump exterior unit defective.
Ɣ Ch
eck, replace.
E9016 E5 Load protec comp
Electronic overload pro-
tection in the coolant com-
pressor
Coolant compressor overload protection
triggered. Pressure dif-
ference between the high and low pressure sides in the coolant
circuit too high (> 26 bar).
– Coolant compressor defective.
– Inverter board in the heat pu
mp exterior unit defective.
– Coolant compressor / inverter board cabling, poor contact.
– Filled coolant quantity too high.
Ɣ Ch
eck, replace.
– Service valve in the heat pump exterior unit not open.
Ɣ Service valve open.
E9017 E7 Fan blocked
Ventilator motor in the
heat pump exterior unit
– A fan in the external heat pump device is blocked.
Ɣ Check ventilator for the effects of contamination or
blockages, if necessary clean and clear blockage.
– Ventilator motor defective.
– Ventilator motor, poor contact.
– Overvoltage at the ventilator motor.
– Fuse in the heat pump exterior unit defective.
– Inverter board in the heat pump exterior uni
t defective.
Ɣ C
heck, replace.
E9018 E9 Expansion valve
Electronic expansion
valve
The electronic expansion valve in the external heat pump unit is
defective, re
place.
E9019 EC
Hot water temper-
ature >85 °C
Storage tank temperature
sensor t
DHW2
The storage tank temperature sensor t
DHW2
delivers a tempera-
ture value > 85 °C.
Sensor or connection cable defective.
Ɣ Check, replace.
E9020 F3 Evaporator over-
Discharge temperature
sensor (hot gas senso
r)
R2T on the coolant com-
pressor of the heat pump
exterior uni
t too high
– Discharge temperature sensor R2T at the coolant compres-
sor or connection cable defective.
– Coolant compressor defective.
Ɣ C
heck, replace.
E9021 H3 HPS-System
High pressure switch
S1PH in the hea
t pump
exterior unit
– High pressure switch S1PH defective.
– Main board in the heat pump exterior unit defective.
– Cabling, poor contact.
Ɣ Check, replace.
Code Malfunction /
Error message
Component/Designation Causes and possible error correction
Display Internal

Rotex HPSU compact (V5) Specifications

General

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