Toshiba Estia HWS-803XWHM3-E Manuel D'installation page 43

Hydro Unit
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
F29 EEROM error
F30 Extended IC error
L07 Communication error
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
F31 EEPROM error
Compressor breakdown
H01
Backup Automatic
present reset
1. Check the resistance value and connection of the hot
×
O
water cylinder sensor (TTW).
1. Check the resistance value and connection of the
×
O
floor-inlet temperature sensor (TFI).
1. Check the resistance value and connection of the
×
O
heater outlet temperature sensor (THO).
1. Check for any disconnection of the heater outlet
× ×
temperature sensor (THO).
1. Check the connection of the floor-inlet temperature
× ×
sensor (TFI).
1. Check the connection (body or connection wiring) of
the low pressure sensor.
O O
2. Check the resistance value of the low pressure
sensor.
× ×
1. Replace the water heat exchange control board.
× ×
1. Replace the water heat exchange control board.
× ×
1. Replace the water heat exchange control board.
1. Check the setting of the FC01 capability
specifications.
× ×
HWS-802xx-E = 0012
HWS-1402xx-E = 0017
× ×
1. Check the body DP-SW12_2,3.
Backup Automatic
present reset
1. Check the resistance value and connection of the
×
O
discharge sensor (TD).
1. Check the resistance value and connection of the
×
O
heat exchange temperature sensor (TE).
1. Check the resistance value and connection of the
×
O
heat exchange temperature sensor (TL).
1. Check the resistance value and connection of the
×
O
outdoor temperature sensor (TO).
1. Check the resistance value and connection of the
×
O
suction temperature sensor (TS).
1. Check the resistance value and connection of the
×
O
heat-sink temperature sensor (TH).
1. Check for any wrong installation of the heat exchange
×
O temperature sensor (TE) and the suction temperature
sensor (TS).
×
O
1. Check the power supply voltage.
×
O 2. Over-loaded condition of the refrigeration cycle.
3. Check that the service valve is fully open.
– 43 –
Installation Manual
O ... Possible
× .... Not possible
Determination and action
Determination and action
EN
42-EN