Toshiba HWS-804XWHM3 series - Hydro Unit Check Codes: Sensor, EEPROM, Setting Errors; Check Codes for Sensor, EEPROM, and Setting Errors

58
Check
code
Diagnostic functional operation
Determination and action
Defect
frequency
confirmation
Operational cause
Backup
present
Automatic
reset
F23
Low pressure sensor error
When PS<0.07 MPa is detected for 90 sec or
more (cooling, defrosting).
When PS<0.07 MPa is detected for 10 minutes
or more (hot water supply, heating)
O
O
1. Check the connection (body or
connection wiring) of the low
pressure sensor.
1
2. Check the resistance value of
the low pressure sensor.
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.
1
L07
Communication error
Individual hydro units have a group line.
×
×
1. Replace the water heat
exchange control board.
1
L09
Communication error
The capability of the hydro unit has not been
set.
×
×
1. Check the setting of the FC01
capability specifications.
HWS-803xx-E = 0012
HWS-1403xx-E = 0017
1
L16
Setting error
When ZONE1 has not been set, while ZONE2
has been set.
×
×
1. Check the body DP-SW12_2,3.
1
Outdoor Unit check codes
o…...…. Possible
x..…Not Possible
Check
code
Diagnostic functional operation
Determination and action
Defect
frequency
confirmation
Operational cause
Backup
present
Automatic
reset
F04
TD sensor error Open or short circuit in the
discharge temperature sensor.
O
×
1. Check the resistance value
and connection of the discharge
sensor (TD).
1
F06
TE sensor error Open or short circuit in the
heat exchange temperature sensor.
O
×
1. Check the resistance value
and connection of the heat
exchange temperature sensor
(TE).
1
F07
TL sensor error Open or short circuit in the
heat exchange temperature sensor.
O
×
1. Check the resistance value
and connection of the heat
exchange temperature sensor
(TL).
1
F08
TO sensor error
Open or short circuit in the outdoor
temperature sensor.
O
×
1. Check the resistance value
and connection of the outdoor
temperature sensor (TO).
1
F12
TS sensor error
Open or short circuit in the suction
temperature sensor.
O
×
1. Check the resistance value
and connection of the suction
temperature sensor (TS).
1
F13
TH sensor error
Open or short circuit in the heat-sink
temperature sensor.
O
×
1. Check the resistance value
and connection of the heat-sink
temperature sensor (TH).
1
F15
TE, TS sensors error
Open or short circuit in the temperature
sensors.
O
×
1. Check for any wrong
installation of the heat exchange
temperature sensor (TE) and the
suction temperature sensor
(TS).
1
F31
EEPROM error
O
×
1