101
F29
EEROM error
Inconsistency is detected once without
verify ACK after writing to EEPROM.
××
1. Replace the water heat exchange
control board.
1—
F30
Extended IC error
When the extended IC is abnormal.
××
1. Replace the water heat exchange
control board.
1123
F32
Flow sensor error
Heating
×
Hot water
O
O
1. Check the connection of flow
sensor.
2. Check the flow rate detected by flow
sensor and actual flow.
1124
F33
Flowing quantity error
1)Detected by TC sensor
TC ≥ 68°C is detected in the heating or
hot water supply heat pump operation
(except for defrosting).
Heating
×
Hot water
O
×
• No or little water flow
• Defect of the flow sensor
4
124
2)Detected by flowing quantity
When the stopped built-in circulation
pump starts its operation, the flow
sensor status is detecting “water flow”.
• Defect of the flow sensor
• Misconnection of flow sensor and
low pressure sensor
• Check the water flow from the
external pump.
2
L02
Combination error
Model name of the outdoor unit is
different.
××
1. Check the model name of the
outdoor unit.
1125
L03
Duplicate main Hydro unit during
Group control
There are more than one header
units in group.
××
1. Check Hydro Unit addresses.
(DN_14)
2. Check for any change made to
remote control connection (group /
individual) since Hydro address
setting.
1—
L07
Communication error
Individual hydro units have a group line.
××
1. Replace the water heat exchange
control board.
1125
L08
Hydro Unit group / Address unset
Address setting has not been performed
for Hydro units.
××
1. Check Hydro Unit addresses.
Note:
This code is displayed when power is
turned on for the first time after
installation.
1—
L09
Communication error
The capability code for the hydro unit
has not been set.
××
1. Check the setting of the DN_11
capability specifications.
601 Hydro = 0010
1101 Hydro = 0015
1125
L16
Setting error
When ZONE1 has not been set, while
ZONE2 has been set.
××
1. Check the DN_6B9, 6BA and set
correctly.
1125
L22
0-10 V Setting error
DN680 settings in group control are not
the same for all units.
××
1. Check the 0-10 V setting for all units.
(DN_680)
1125
P31
Slave Hydro unit error which occurs
when error occurs in master Hydro
unit
×
O
1. Check the remote controller
connection.
2. Defect in the remote controller.
3. Set the address No. of DN_12 ~ 14
correctly for each Hydro unit.
1—
Check
code
Diagnostic functional operation
Determination and action
Number of
abnormalities
for
confirmation
Detailed
item
Operational cause
Backup
operation
Automatic
reset
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