11 Disposal
Installer and user reference guide
49
SERHQ020~0 SEHVX20~64BAW
Split packaged air-cooled water chiller
4P508020-1A – 2018.01
Main code
Cause
Solution
Returning water thermistor error (R12T/R22T)
▪ Check wiring connections.
▪ Contact your local dealer.
Heating leaving water thermistor error (R11T/R12T)
▪ Check wiring connections.
▪ Contact your local dealer.
User interface thermostat thermistor error
Contact your local dealer.
High pressure error (SENPH/S1PH)
▪ Check that the circuit does not contain any air.
▪ Check that water flow is possible (open all valves in the
circuit).
▪ Check that the water filter is not blocked.
▪ Check that all refrigerant stop valves are open.
▪ Contact your local dealer.
Low pressure error (SENPL)
Contact your local dealer.
R410A suction thermistor error (R14T/R24T)
▪ Check wiring connections.
▪ Contact your local dealer.
Reversed power supply phase malfunction
Correct phase order.
Insufficient supply voltage
▪ Check wiring connections.
▪ Contact your local dealer.
Two main user interfaces are connected (when using two
user interfaces)
Check that SS1 of one controller is set to MAIN, and the
other one to SUB. Turn the power supply off, and then back
on.
Type connection problem
▪ Wait until initialization between the indoor unit and
outdoor unit is completed (wait at least 12 minutes after
power ON).
▪ Contact your local dealer.
Address error
Contact your local dealer.
10.2.1
Error codes of the outdoor unit
Heating mode error codes
Error code Solution
recharge
operation
Close valve A immediately and press the TEST
OPERATION button once. The operation will restart
from the charging mode judgement onwards.
charging
aborted
▪ Close valve A immediately. Check following items:
▪ Is the gas side stop valve opened correctly?
▪ Is the valve of the refrigerant tank open?
▪ Are the air inlet and outlet of the indoor unit
obstructed?
▪ Correct the abnormality and restart the automatic
charging procedure.
Cooling mode error codes
Error code Solution
,
,
replace
refrigerant
tank
▪ Close valve A and replace the empty refrigerant
tank. When replaced, open valve A (the outdoor unit
will not stop operating).
▪ The code on the display shows the unit where a
cylinder is to be renewed:
= master unit,
=
slave unit 1,
= slave unit 2, flashing
,
and
= all units
recharge
operation
Close valve A immediately. Restart the automatic
charging procedure.
Error code Solution
charging
aborted
▪ Close valve A immediately. Check following items:
▪ Is the gas side stop valve opened correctly?
▪ Is the valve of the refrigerant tank open?
▪ Are the air inlet and outlet of the indoor unit
obstructed?
▪ Correct the abnormality and restart the automatic
charging procedure.
*
abnormal
stop
Close valve A immediately. Confirm the malfunction
code on the user interface and correct the abnormality
by following the information
abnormal completion of the test run" on page 46
.
11
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.
