Toshiba HWT-1101F21MM3W-E, Installation Manual

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Hydro Unit Installation Manual
Defect mode detected by the Outdoor Unit
Check
code
Diagnostic functional operation
Determination and action
Operational cause
Backup
operation
Automatic
reset
F04
TD sensor error
O
×
1. Check the resistance value and connection of the
discharge sensor (TD).
F06
TE sensor error
O
×
1. Check the resistance value and connection of the
heat exchange temperature sensor (TE).
F07
TL sensor error
O
×
1. Check the resistance value and connection of the
heat exchange temperature sensor (TL).
F08
TO sensor error
O
×
1. Check the resistance value and connection of the
outdoor temperature sensor (TO).
F12
TS sensor error
O
×
1. Check the resistance value and connection of the
suction temperature sensor (TS).
F13
TH sensor error
O
×
1. Check the resistance value and connection of the
heat-sink temperature sensor (TH).
F15
TE, TS sensors error
O
×
1. Check for any wrong installation of the heat exchange
temperature sensor (TE) and the suction temperature
sensor (TS).
F24
PD sensor error
O
×
1. Check the value of PD sensor by the remote
controller and connection of the PD sensor.
F31
EEPROM error
O
×
1. Replace the outdoor control board.
H01
Compressor breakdown
O
×
1. Check the power supply voltage.
2. Over-loaded condition of the refrigeration cycle.
3. Check that the service valve is fully open.
H02
Compressor lock
O
×
1. Defect of compressor (lock)
– Replace the compressor.
2. Defect of compressor wiring (open phase).
H03
Defect in the current detection
circuit
O
×
1. Replace the outdoor inverter control board.
H04
Operation of case thermostat
O
×
1. Check the refrigeration cycle (gas leak).
2. Check the case thermostat and connector.
3. Check that the service valve is fully open.
4. Defect of the pulse motor valve.
5. Check for kinked piping.
L10
Unset service PC board jumper
Jumpers have not been cut.
O
×
1. Cut outdoor PC board jumper wire (for service).
L15
Combination error
Model name of the Hydro Unit is
different.
× ×
1. Check the model name of the Hydro Unit.
L29
The communication between the
outdoor PC board MUCs error
O
×
1. Replace the outdoor control board.
P03
The outlet temperature error
O
×
1. Check the refrigeration cycle (gas leak).
2. Defect of the pulse motor valve.
3. Check the resistance value of the discharge
temperature sensor (TD).
P04
The high pressure switch error
O
×
1. Almost no or little water flow.
2. Defect of the flow sensor.
3. On-load operation under the above conditions.
4. Defect in the high pressure switch.
5. Failure of a refrigerant value to open.
P05
The power supply voltage error
O
×
1. Check the power supply voltage.
P07
Overheating of heat-sink error
O
×
1. Check the thread fastening and heat-sink grease
between the outdoor control board and the heat-sink.
2. Check the heat-sink fan duct.
3. Check the resistance value of the heat-sink
temperature sensor (TH).
P15
Detection of gas leak
O
×
1. Check the refrigeration cycle (gas leak).
2. Check that the service valve is fully open.
3. Defect of the pulse motor valve.
4. Check for kinked piping.
5. Check the resistance value of the discharge
temperature sensor (TD), the suction temperature
sensor (TS).
6. Check the value of PD sensor by the remote
controller.
P19
The 4-way valve inversion error
O
×
1. Check the operation of the 4-way valve unit or the coil
characteristics.
2. Defect of the pulse motor valve.
3. Check the resistance value of the heat exchange
temperature sensor (TE) and the suction temperature
sensor (TS).
P20
High pressure protection operation
O
×
1. Check that the service valve is fully open.
2. Defect of the pulse motor valve.
3. Check the outdoor fan system (including clogging).
4. Over-filling of refrigerant.
5. Check the value of PD sensor by the remote
controller.
6. The water piping is too short.
Install a buffer tank or set the setting temperature
lower.
P22
Outdoor fan system error
O
×
1. Check the lock status of the motor fan.
2. Check the connection of the fan motor cable
connector.
3. Check the power supply voltage.
P26
Short circuit of the compressor
driver element error
O
×
1. Abnormality occurs when operating with the
compressor wiring disconnected … Check the
control board.
2. No abnormality occurs when operating with the
compressor wiring disconnected … Compressor rare
short.
P29
Compressor rotor position error
O
×
1. Even if the connection lead wire of the compressor is
disconnected, it stops due to an abnormality in the
position detection … Replace the inverter control
board.
2. Check the wire wound resistor of the compressor.
Short circuit
… Replace the compressor.
Check
code
Diagnostic functional operation
Determination and action
Operational cause
Backup
operation
Automatic
reset
69-EN 70-EN