Toshiba HWS-803XWHM3-E Data Book page 128

7. HYDRO UNIT INSTALLATION MANUAL
Diagnostic functional operation
Check
code
Operational cause
TTW sensor error
F14
TFI sensor error
F17
THO sensor error
F18
Detection of THO disconnection
F19
error
TFI sensor error
F20
Low pressure sensor error
F23
EEROM error
F29
Extended IC error
F30
Communication error
L07
Communication error
L09
Setting error
L16 When ZONE1 has not been set, while
ZONE2 has been set.
Defect mode detected by the water heat exchange
Diagnostic functional operation
Check
code
Operational cause
TD sensor error
F04
TE sensor error
F06
TL sensor error
F07
TO sensor error
F08
TS sensor error
F12
TH sensor error
F13
TE, TS sensors error
F15
EEPROM error
F31
Compressor breakdown
H01
Backup Automatic
present reset
1. Check the resistance value and connection of the hot
u
O
1. Check the resistance value and connection of the
u
O
u 1. Check the resistance value and connection of the
O
1. Check for any disconnection of the heater outlet
u u
1. Check the connection of the floor-inlet temperature
u u
1. Check the connection (body or connection wiring) of
O O
2. Check the resistance value of the low pressure
u u
1. Replace the water heat exchange control board.
u u
1. Replace the water heat exchange control board.
u u
1. Replace the water heat exchange control board.
1. Check the setting of the FC01 capability
u u
u u
1. Check the body DP-SW12_2,3.
Backup Automatic
present reset
1. Check the resistance value and connection of the
u
O
1. Check the resistance value and connection of the
u
O
1. Check the resistance value and connection of the
u
O
1. Check the resistance value and connection of the
u
O
1. Check the resistance value and connection of the
u
O
u 1. Check the resistance value and connection of the
O
1. Check for any wrong installation of the heat exchange
u
O
u
O
1. Check the power supply voltage.
u
O 2. Over-loaded condition of the refrigeration cycle.
3. Check that the service valve is fully open.
– 127 –
Engineering Data Book
Determination and action
water cylinder sensor (TTW).
floor-inlet temperature sensor (TFI).
heater outlet temperature sensor (THO).
temperature sensor (THO).
sensor (TFI).
the low pressure sensor.
sensor.
specifications.
HWS-803xx-E = 0012
HWS-1403xx-E = 0017
Determination and action
discharge sensor (TD).
heat exchange temperature sensor (TE).
heat exchange temperature sensor (TL).
outdoor temperature sensor (TO).
suction temperature sensor (TS).
heat-sink temperature sensor (TH).
temperature sensor (TE) and the suction temperature
sensor (TS).
O ... Possible
× .... Not possible