Outdoor Unit Installation Manual - Toshiba HWS-802XWHM3-E Engineering Data

7. HYDRO UNIT INSTALLATION MANUAL
Alarm
Main failure part
indication
Outdoor unit discharge
F04
temperature sensor TD defect
Outdoor unit temperature sensor
F06
TE or TS defect
Outdoor unit outside air
F08
temperature sensor TO defect
H01 Compressor breakdown
H02 Compressor locked
H03 Current detector defect
H06 Low-pressure system defect
L29 Other outdoor unit faults
L31 Phase sequence error, etc.
Abnormal outdoor unit discharge
P03
temperature
P04 High-pressure system defect
P22 Outdoor unit fan defect
P26 Inverter Idc operation
P29 Position detection error
When open- or short-circuit of discharge temperature sensor TD is
detected
When open- or short-circuit of heat exchanger temperature sensor TE or
TS is detected
When open- or short-circuit of outside air temperature sensor TO is
detected
When min-Hz is reached by current release control or when short-circuit
current (Idc) is detected after direct current excitation
When compressor lock is detected
When abnormal current is detected in AC-CT or phase loss is detected
Ps pressure sensor defect or low-pressure protective operation
Other outdoor unit faults: 1) Inter-MCU communication error between IPDU
and CDB 2) abnormal GBT heatsink temperature
When phase sequence of 3-phase power supply is incorrect (thermostat
OFF operation continued), etc.
When abnormal temperature is detected by discharge temperature release
control
When high-pressure switch, IOL is activated or when abnormality is
detected by high-pressure release control by TE
When overcurrent or lock in outdoor unit fan drive circuit is detected
When short-circuit protection is activated for compressor driver devices
(G-Tr, IGBT)
When compressor motor position detection error is detected
– 104 –
Engineering Data Book
Description
7
42-EN