76
E04
Regular communication error
between hydro unit and outdoor unit
The serial signal cannot be received
from outdoor.
O
O
1. Check the serial circuit.
• Miswiring of the crossover between
the water heat exchanger and the
outdoor unit
1
E08
Duplicate address of Hydro unit, or
Duplicate master Hydro unit during
Group control
×
O
1. Set the address No. of the Rotary
switch "SW01" correctly for each
Hydro unit.
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.
O
O
1. Check the resistance value and
connection of the heat exchange
temperature sensor (TC).
1
F10
TWI sensor error
Open or short circuit in the water inlet
temperature sensor.
O
O
1. Check the resistance value and
connection of the water inlet
temperature sensor (TWI).
1
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).
1
Check
code
Diagnostic functional operation
Determination and action
Number of
abnormalities
for
confirmation
Detailed
item
Operational cause
Backup
operation
Automatic
reset
Summary of Contents for HWS-P1105HR-E
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