13 Disposal; Overview: Disposal - Rotex HPSU Bi-Bloc Ultra Series Installer's Reference Manual

13 Disposal

Error code Detailed error
code
7H 05
7H 06
7H 07
80 00
81 00
89 01
89 02
89 03
8F 00
8H 00
8H 03
AA 01
AA 02
AC 00
AH 00
AJ 03
C0 00
C0 01
C0 02
C4 00
CJ 02
EC 00
EC 04
H1 00
HC 00
HJ 10
JA 17
U3 00
U4 00
U5 00
U8 01
U8 02
U8 03
Installer reference guide
90
Description
Water flow problem during
heating/sampling
Water flow problem during
cooling/defrost
Water flow problem. Pump
deblocking active
Returning water temperature
sensor problem
Leaving water temperature
sensor problem
Heat exchanger frozen
Heat exchanger frozen
Heat exchanger frozen
Abnormal increase outlet
water temperature (DHW)
Abnormal increase outlet
water temperature
Overheating water circuit
(thermostat)
Backup heater overheated
External backup heater
overheated
Booster heater overheated
Tank disinfection function
not completed correctly
Too long DHW heat-up time
required
Water flow detected while pump
is OFF
Flow switch malfunction
Flow switch malfunction
Heat exchanger temperature
sensor problem
Room temperature sensor
problem
Abnormal increase tank
temperature
Tank preheating
External temperature sensor
problem
Tank temperature sensor
problem
Water pressure sensor
abnormality
Refrigerant pressure sensor
abnormality
Underfloor heating screed
dryout function not
completed correctly
Indoor/outdoor unit
communication problem
User interface
communication problem
Connection with LAN adapter
lost
Connection with room
thermostat lost
No connection with room
thermostat
Error code Detailed error
code
UA 17
UA 21
UA 22
INFORMATION
If the booster heater overheats and is disabled by the
thermostatic safety, the unit will not give an error directly.
Check if the booster heater is still in operation if you
experience one or more of the following errors:
▪ Powerful operation takes a very long time to heat up
and the error code AJ-03 is displayed.
▪ During anti-legionella operation (weekly), the error code
AH-00 is displayed because the unit cannot reach the
requested temperature required for tank disinfection.
INFORMATION
A malfunctioning booster heater will have an impact on
energy metering and power consumption control.
NOTICE
When the minimum water flow is lower than described in
the table below, the unit will temporarily stop operation and
the user interface will display error 7H‑01. After some time,
this error will reset automatically and the unit will resume
operation.
Minimum required flow rate
12 l/min
INFORMATION
Error AJ-03 is reset automatically from the moment there is
a normal tank heat-up.
INFORMATION
The user interface of the indoor unit will display how to
reset an error code.
13 Disposal
NOTICE
Do NOT try to dismantle the system yourself: dismantling
of the system, treatment of the refrigerant, oil and other
parts MUST comply with applicable legislation. Units
MUST be treated at a specialised treatment facility for
reuse, recycling and recovery.
13.1

Overview: Disposal

Typical workflow
Disposing of the system typically consists of the following stages:
1 Pumping down the system.
2 Bringing the system to a specialized treatment facility.
INFORMATION
For more details, see the service manual.
Description
Tank type problem
Extension/hydro mismatch
problem
Communication problem
between control box and
option box
RRGA04~08DAV3 + RHBX04+08DA
ROTEX HPSU Bi-Bloc Ultra
4P495262-1B – 2019.10