Toshiba HWT-601XWHM3W-ETR Service Manual page 102

Diagnostic functional operation
Check
code
Operational cause
EEROM error
F29 Inconsistency is detected once without
verify ACK after writing to EEPROM.
Extended IC error
F30
When the extended IC is abnormal.
Flow sensor error
F32
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).
F33
2)Detected by flowing quantity
When the stopped built-in circulation
pump starts its operation, the flow
sensor status is detecting "water flow".
Combination error
L02 Model name of the outdoor unit is
different.
Duplicate main Hydro unit during
Group control
There are more than one header
L03
units in group.
Communication error
L07
Individual hydro units have a group line.
Hydro Unit group / Address unset
Address setting has not been performed
L08
for Hydro units.
Communication error
The capability code for the hydro unit
L09
has not been set.
Setting error
L16 When ZONE1 has not been set, while
ZONE2 has been set.
0-10 V Setting error
L22 DN680 settings in group control are not
the same for all units.
Slave Hydro unit error which occurs
when error occurs in master Hydro
P31
unit
Determination and action
Backup Automatic
operation reset
1. Replace the water heat exchange
× ×
control board.
1. Replace the water heat exchange
× ×
control board.
Heating
1. Check the connection of flow
×
sensor.
O
2. Check the flow rate detected by flow
Hot water
sensor and actual flow.
O
• No or little water flow
• Defect of the flow sensor
Heating
×
×
Hot water
• Defect of the flow sensor
O
• Misconnection of flow sensor and
low pressure sensor
• Check the water flow from the
external pump.
1. Check the model name of the
× ×
outdoor unit.
1. Check Hydro Unit addresses.
(DN_14)
2. Check for any change made to
× ×
remote control connection (group /
individual) since Hydro address
setting.
1. Replace the water heat exchange
× ×
control board.
1. Check Hydro Unit addresses.
Note:
× ×
This code is displayed when power is
turned on for the first time after
installation.
1. Check the setting of the DN_11
capability specifications.
× ×
601 Hydro = 0010
1101 Hydro = 0015
1. Check the DN_6B9, 6BA and set
× ×
correctly.
1. Check the 0-10 V setting for all units.
× ×
(DN_680)
1. Check the remote controller
connection.
×
O 2. Defect in the remote controller.
3. Set the address No. of DN_12 ~ 14
correctly for each Hydro unit.
101
Number of
abnormalities Detailed
for item
confirmation
1 —
1 123
1 124
4
124
2
1 125
1 —
1 125
1 —
1 125
1 125
1 125
1 —