Toshiba MMY-MAP0804HT8-E Service Manual page 183

Outdoor 7-segment display
Main
remote
Check
controller
code
F08 F08
F10 –
F11 –
F12 F12
F13 F13
F15 F15
F16 F16
F22 F22
F23 F23
F24 F24
Downloaded from www.Manualslib.com
Check code
Location
AI-NET central
of
control
detection
remote
Sub-code
controller
I/F
– 1b
Indoor
unit
– 0C
Indoor
unit
–
I/F
– A2
01: Compressor 1 IPDU
side
02: Compressor 2
43
side
03: Compressor 3
side
I/F
– 18
I/F
– 43
I/F
–
I/F
– 43
I/F
– 43
manuals search engine
System Error detection
Description
status
TO sensor All stop Sensor resistance is infinity
error or zero (open/short circuit).
Indoor TA Stop of Sensor resistance is infinity
sensor error corresponding or zero (open/short circuit).
unit
Indoor TF Stop of Sensor resistance is infinity
sensor error corresponding or zero (open/short circuit).
unit
TS1 sensor All stop Sensor resistance is infinity
error or zero (open/short circuit).
TH sensor All stop Sensor resistance is infinity
error or zero (open/short circuit).
Outdoor All stop During compressor
temperature operation in HEAT mode,
sensor wiring TE1 continuously provides
error (TE1, temperature reading
TL) higher than indicated by TL
by at least specified margin
for 3 minutes or more.
Outdoor All stop Readings of high-pressure
pressure Pd sensor and low-
sensor wiring pressure Ps sensor are
error (Pd, Ps) switched.
Output voltages of both
sensors are zero.
TD3 sensor All stop Sensor resistance is infinity
error or zero. (open/short circuit)
Ps sensor All stop Output voltage of Ps
error sensor is zero.
Pd sensor All stop Output voltage of Pd
error sensor is zero (sensor
open-circuited).
Pd > 4.15MPa despite
compressor having been
turned off.
182
Check items (locations)
condition(s)
• Check connection of TO
sensor connector.
• Check resistance
characteristics of TO sensor.
• Check for defect in outdoor
P.C. board (I/F).
• Check connection of TA
sensor connector and wiring.
• Check resistance
characteristics of TA sensor.
• Check for defect in indoor P.C.
board.
• Check connection of TF
sensor connector and wiring.
• Check resistance
characteristics of TF sensor.
• Check for defect in indoor P.C.
board.
• Check connection of TS1
sensor connector.
• Check resistance
characteristics of TS1 sensor.
• Check for defect in outdoor
P.C. board (I/F).
• Defect in IGBT built-in
temperature sensor
¨ Replace A3-IPDU P.C.
board.
• Check installation of TE1 and
TL sensors.
• Check resistance
characteristics of TE1 and TL
sensors.
• Check for outdoor P.C. board
(I/F) error.
• Check connection of high-
pressure Pd sensor connector.
• Check connection of low-
pressure Ps sensor connector.
• Check for defect in pressure
sensors Pd and Ps.
• Check for error in outdoor P.C.
board (I/F).
• Check for deficiency in
compressive output of
compressor.
• Check connection of TD3
sensor connector.
• Check resistance
characteristics of TD3 sensor.
• Check for defect in outdoor
P.C. board (I/F).
• Check for connection error
involving Ps sensor and Pd
sensor connectors.
• Check connection of Ps sensor
connector.
• Check for defect in Ps sensor.
• Check for deficiency in
compressive output of
compressor.
• Check for defect in 4-way
valve.
• Check for defect in outdoor
P.C. board (I/F).
• Check for defect in SV4 circuit.
• Check connection of Pd
sensor connector.
• Check for defect in Pd sensor.
• Check for defect in outdoor
P.C. board (I/F).