Toshiba MMD-AP0186HP-E Service Manual page 72

Check code
Outdoor 7-segment display
Main
remote
Check
controller
code
H07 H07
01: TK1 sensor
error
02: TK2 sensor
error
03: TK3 sensor
error
04: TK4 sensor
error
05: TK5 sensor
error
H08 H08
AMP Air Conditioning
Location
Description
of
detection
Sub-code
I/F Low oil level
protection
I/F Error in
temperature
sensor for oil
level detection
Error detection
System status
condition(s)
All stop Operating compressor
detects continuous state of
low oil level for about 2 hours.
All stop Sensor resistance is infinity
or zero (open / short circuit).
All stop Sensor resistance is infinity
or zero (open / short circuit).
All stop Sensor resistance is infinity
or zero (open / short circuit).
All stop Sensor resistance is infinity
or zero (open / short circuit).
All stop Sensor resistance is infinity
or zero (open / short circuit).
– 72–
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Check items (locations)
<All outdoor units in
corresponding line to be
checked>
Check balance pipe
service valve to confirm full
opening.
Check connection and
installation of TK1, TK2,
TK3, TK4, and TK5
sensors.
Check resistance
characteristics of TK1,
TK2, TK3, TK4, and TK5
sensors.
Check for gas or oil leak in
same line.
Check for refrigerant
entrapment inside
compressor casing.
Check SV3A, SV3B,
SV3C, SV3D, SV3E, and
SV3F valves for defect.
Check oil return circuit of
oil separator for clogging.
Check oil equalizing circuit
for clogging.
Check connection of TK1
sensor connector.
Check resistance
characteristics of TK1
sensor.
Check for defect in outdoor
P.C. board (I/F).
Check connection of TK2
sensor connector.
Check resistance
characteristics of TK2
sensor.
Check for defect in outdoor
P.C. board (I/F).
Check connection of TK3
sensor connector.
Check resistance
characteristics of TK3
sensor.
Check for defect in outdoor
P.C. board (I/F).
Check connection of TK4
sensor connector.
Check resistance
characteristics of TK4
sensor.
Check for defect in outdoor
P.C. board (I/F).
Check connection of TK5
sensor connector.
Check resistance
characteristics of TK5
sensor.
Check for defect in outdoor
P.C. board (I/F).