Toshiba HWT-601XWHT6W-E - Page 101

100
E04
Regular communication error
between hydro unit and outdoor unit
The serial signal cannot be received
from outdoor.
OO
1. Check the serial circuit.
• Miswiring of the crossover between
the water heat exchanger and the
outdoor unit
1117
E08
Duplicate address of Hydro unit, or
Duplicate master Hydro unit during
Group control
×
O
1. Set the address No. of DN_12 ~ 14
correctly for each Hydro unit.
1—
E14
Regular communication error
between hydro unit and 0-10 V-IF
When there is no regular communication
from the 0-10 V interface for 3 min, or
when no 0-10 V interface is equipped.
××
1. Check the 0-10 V-IF connection.
2. Defect in the 0-10 V-IF.
1—
E18
Regular communication error
between master Hydro unit and slave
Hydro unit during Group control
×
O
1. Check the Hydro unit connection.
• Miswiring of the master and slave
Hydro unit.
1—
F03
TC sensor error
Open or short circuit in the heat
exchange temperature sensor.
OO
1. Check the resistance value and
connection of the heat exchange
temperature sensor (TC).
1117
F10
TWI sensor error
Open or short circuit in the water inlet
temperature sensor.
OO
1. Check the resistance value and
connection of the water inlet
temperature sensor (TWI).
1119
F11
TWO sensor error
Open or short circuit in the water outlet
temperature sensor.
Heating
×
Hot water
O
O
1. Check the resistance value and
connection of the water outlet
temperature sensor (TWO).
1119
F14
TTW sensor error
Open or short circuit in the hot water
cylinder sensor.
Heating
O
Hot water
×
O
1. Check the resistance value and
connection of the hot water cylinder
sensor (TTW).
1120
F17
TFI sensor error
Open or short circuit in the floor
temperature sensor.
(Only when zone 2 is used)
Heating
×
Hot water
O
O
1. Check the resistance value and
connection of the floor-inlet
temperature sensor (TFI).
1120
F18
THO sensor error
Open or short circuit in the heater outlet
temperature sensor.
Heating
×
Hot water
O
O
1. Check the resistance value and
connection of the heater outlet
temperature sensor (THO).
1120
F19
Detection of THO disconnection error
When TWO – THO > 15K is detected
and 30 sec elapsed.
Heating
×
Hot water
O
×
1. Check for any disconnection of the
heater outlet temperature sensor
(THO).
2. Defect of the flow sensor.
1121
F20
TFI sensor error
When TWO – TFI > 50K is detected and
TFI < TWI – 5K is detected 20 min.
Heating
×
Hot water
O
×
1. Check the connection of the floor-
inlet temperature sensor (TFI).
1122
F23
Low pressure sensor error
Open circuit in the low pressure sensor.
OO
1. Check the connection (body or
connection wiring) of the low
pressure sensor.
2. Check the refrigeration cycle (gas
leak)
1123
Check
code
Diagnostic functional operation
Determination and action
Number of
abnormalities
for
confirmation
Detailed
item
Operational cause
Backup
operation
Automatic
reset