Error Codes - Rotex RKHBH008BB3V3 Manuel D'installation

11.3. Error codes

When a safety device is activated, the user interface LED will be
flashing, and an error code will be displayed.
A list of all errors and corrective actions can be found in the table
below.
Reset the safety by turning the unit OFF and back ON.
Instruction to turn the unit OFF
User interface mode Domestic water
(heating/cooling =)
heating mode (w)
ON ON
ON OFF
OFF ON
OFF OFF
In case this procedure for resetting the safety is not successful,
contact your local dealer.
Error
code Failure cause
80
Inlet water temperature
thermistor failure (inlet water
thermistor broken)
81
Outlet water temperature
thermistor failure (outlet water
temperature sensor broken)
89
Water heat exchanger freeze-up
failure (due to water flow too low)
Water heat exchanger freeze-up
failure (due to refrigerant
shortage)
7H
Flow failure (water flow too low
or no water flow at all, minimum
required water flow is 12 l/min)
8F
Outlet water temperature of
indoor unit too high (>75°C)
during domestic water heating
8H
Outlet water temperature of
indoor unit too high (>65°C)
A1
Indoor unit PCB defective
A5
Too low (during cooling
operation) or too high (during
heating operation) refrigerant
temperature (measured by R3T)
Installation manual
47
Push the Push the
y button v button
1 time 1 time
1 time —
— 1 time
— —
Corrective action
Contact your local dealer.
Contact your local dealer.
Refer to error code 7H.
Contact your local dealer.
• Check that all shut-off valves
of the water circuit are
completely open.
• Check if the water filter needs
cleaning.
• Check that the unit is
operating within its operating
range (refer to "12. Technical
specifications" on page 49).
• Also refer to "6.9. Charging
water" on page 17.
• Make sure there is no air in
the system (purge air).
• Check on the manometer that
there is sufficient water
pressure. The water pressure
must be >1 bar (water is cold).
• Check that the pump speed
setting is on the highest
speed.
• Make sure that the expansion
vessel is not broken.
• Check that the resistance in
the water circuit is not too high
for the pump (refer to
"8.8. Setting the pump speed"
on page 26).
• If this error occurs at defrost
operation (during space
heating or domestic water
heating), make sure that the
backup heater power supply is
wired correctly and that fuses
are not blown.
• Check that the contactor of the
electric backup heater is not
short circuited.
• Check that the outlet water
thermistor is giving the correct
read out.
• Check that the contactor of the
electric backup heater is not
short circuited.
• Check that the outlet water
thermistor is giving the correct
read out.
Contact your local dealer.
Contact your local dealer.
Error
code Failure cause
AA
Backup heater thermal protector
is open
Check the reset button of the
thermal protector.
If both the thermal protector and
the controller are reset, but the
AA error code persists, the
backup heater thermal fuse has
blown.
AC
Booster heater thermal protector
is open (applies only to
installations with a domestic hot
water tank with built-in electrical
booster heater (RKHW*))
C0
Flow switch failure (flow switch
remains closed while pump is
stopped)
C4
Heat exchanger thermistor
failure (heat exchanger
temperature sensor broken)
E1
Outdoor unit PCB defective
E3
Abnormal high pressure
E4
Actuation of low pressure sensor
E5
Overload activation of
compressor
E7
Fan lock failure (fan is locked)
E9
Malfunction of electronic
expansion valve
EC
Domestic hot water temperature
too high (>89°C)
F3
Too high discharge temperature
(e.g. due to outdoor coil
blockage)
H3
Malfunctioning HPS system
H9
Outdoor temperature thermistor
failure (outdoor thermistor is
broken)
HC
Domestic hot water tank
thermistor failure
J1
Malfunction of pressure sensor
J3
Discharge pipe thermistor failure
J5
Suction pipe outdoor unit
thermistor failure
J6
Aircoil thermistor frost detection
failure
J7
Aircoil thermistor mean
temperature failure
J8
Liquid pipe outdoor unit
thermistor failure
L4
Electric component failure
L5
Electric component failure
L8
Electric component failure
L9
Electric component failure
LC
Electric component failure
P1
PCB failure
P4
Electric component failure
PJ
Failure of capacity setting
Indoor unit for air to water heat pump system
Corrective action
Reset the thermal protector by
pressing the reset button (refer
to "5.2. Main components" on
page 10 for location of the reset
button).
Contact your local dealer.
Reset the thermal protector.
Check that the flow switch is not
clogged with dirt.
Contact your local dealer.
Contact your local dealer.
Check that the unit is operating
within its operating range (refer
to "12. Technical specifications"
on page 49).
Contact your local dealer.
Check that the unit is operating
within its operating range (refer
to "12. Technical specifications"
on page 49).
Contact your local dealer.
Check that the unit is operating
within its operating range (refer
to "12. Technical specifications"
on page 49).
Contact your local dealer.
Check if the fan is not obstructed
by dirt. If the fan is not
obstructed, contact your local
dealer.
Contact your local dealer.
• Check that the contactor of the
electric booster heater is not
short circuited.
• Check that the domestic hot
water thermistor is giving the
correct read out.
Clean the outdoor coil. If the coil
is clean, contact your local
dealer.
Contact your local dealer.
Contact your local dealer.
Contact your local dealer.
Contact your local dealer.
Contact your local dealer.
Contact your local dealer.
Contact your local dealer.
Contact your local dealer.
Contact your local dealer.
Contact your local dealer.
Contact your local dealer.
Contact your local dealer.
Contact your local dealer.
Contact your local dealer.
Contact your local dealer.
Contact your local dealer.
Contact your local dealer.
RKHBH/X008BB
4PW62574-1 – 10.2010