Toshiba HWS-802XWHT6-E - Manual (Page 73)

72
Toshiba
P20
High pressure protection operation
When an abnormal stop occurs due to
the high pressure release control.
When the heat exchange temperature
sensor (TL) detects 63°C during the
cooling operation.
When the water outlet sensor (TWO)
detects 60°C during the heating or hot
water supply 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 resistance value of the
heat exchange temperature sensor
(TL) and the water outlet
temperature sensor (TWO).
10 97
P22
Outdoor fan system error
When a DC fan rotor position detection
NG, element short circuit, loss of
synchronization, or abnormal motor
current occurs.
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
(AC230 V±23 V).
1-4 98
P26
Short circuit of the compressor driver
element error
When an abnormal short circuit of IGBT
is detected. O
×
1. P26 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.
8 98
P29
Compressor rotor position error
The rotor position in the compressor
cannot be detected.
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.
8 98
Check
code
Diagnostic functional operation
Determination and action
Number of
abnormalities
for
confirmation
Detailed
item
Operational cause
Backup
present Automat
ic reset
+00A09-002_01EN_SVM_ALL_Air_to_Water.book Page 72 Monday, October 5, 2009 2:09 PM