Toshiba MMD-UP0481HFP-UL Service Manual page 60

(Check code detected by Inverter of Compressor featuring in outdoor unit - typical examples)
Check code
Outdoor 7-segment display
Sub-code
1∗: Compressor 1
F13
2∗: Compressor 2
1∗: Compressor 1
H01
2∗: Compressor 2
1∗: Compressor 1
H02
2∗: Compressor 2
1∗: Compressor 1
H03
2∗: Compressor 2
01: Compressor 1
P04
02: Compressor 2
01: Compressor 1 side
P05
02: Compressor 2 side
01: Compressor 1 side
P07
02: Compressor 2 side
P11 –
1∗: Fan P.C. board 1
P22
2∗: Fan P.C. board 2
1∗: Compressor 1
P26
2∗: Compressor 2
1∗: Compressor 1
P29
2∗: Compressor 2
Note: The above check codes are examples only, and different check codes may be displayed depending on the outdoor unit configuration
Display of receiving unit
Central Indicator light block
control or
main remote
Operation Timer Ready
controller Flash
display
F13 ALT
H01
H02
H03
P04 ALT
P05 ALT Compressor Vdc trouble
P07 ALT Heat sink overheat trouble
P11 ALT
P22 ALT
P26 ALT
P29 ALT
- 60 -
Typical problem site
Trouble in temperature
Temperature sensor built into indoor IPM (TH)
sensor built into
has been open/short-circuited.
indoor IPM (TH)
Inverter current (Idc) detection circuit detects
Compressor breakdown
overcurrent.
Compressor trouble
Compressor lockup is detected
(lockup)
Current detection circuit Abnormal current is detected while inverter
trouble compressor is turned off.
Activation of high-pressure
High-pressure SW is activated.
SW
Inverter DC voltage is too high (overvoltage)
or too low (undervoltage).
Temperature sensor built into IPM (TH) detects
overheating.
Outdoor heat exchanger Remaining frost on outdoor heat exchanger
freeze trouble has been detected repeatedly.
Outdoor fan P.C. board
Outdoor fan P.C. board detects trouble.
trouble
Short-circuit protection for compressor motor
Activation of IPM,
compressor short-circuit driver circuit components is activated (momentary
protection overcurrent).
Compressor position Compressor motor position detection trouble is
detection circuit trouble detected.
Description of proplem