Toshiba SUPER MMK-AP0073H (IN) Service Manual page 69

Check code
Main
Outdoor 7-segment display
remote
controller Check code Sub-code
P07 P07 01: Compressor 1 side
02: Compressor 2 side
P12 — —
P13 P13 —
P15 P15 01: TS condition
02: TD condition
P17 P17 —
P19 P19 Detected
outdoor unit No.
Detected
AI-NET Check code name
position
central control
remote controller
1C IPDU Heat sink overheat error
I/F
11 Indoor Indoor fan motor error
47 I/F Outdoor liquid back
detection error
AE I/F Gas leak detection
(TS1 condition)
AE I/F Gas leak detection
(TD condition)
Discharge temp TD2
bb I/F
error
8 I/F 4-way valve operation
error
Status Error detection condition
All stop IGBT built-in temp sensor (TH) was
overheated.
Corresponding • The value of motor speed
unit only stops. deviated from target value was
detected for certain time.
• Over-current protection operated.
All stop <In cooling>
While the system is operating in
COOL mode, a high pressure value
was detected in follower unit in
which compressor did not operate.
<In heating>
While the system is operating in
HEAT mode, outdoor PMV of which
opening degree was 100p or less
for a certain time.
All stop Suction temp exceeded the
judgment standard temp for 10
minutes or more.
<TS error judgment standard
temperature>
In cooling operation: 60°C or higher
In heating operation: 40°C or higher
All stop Discharge temperature TD1 or TD2
was continuously 108°C or higher
for 10 minutes.
All stop Discharge temperature (TD2)
exceeded 115°C.
All stop When abnormal refrigerating cycle
data was detected in heating
Check item (position)
• Check power voltage.
• Check outdoor fan system error.
• Check clogging of heat sink cooling duct.
• Check fixation between IGBT and heat sink.
(Check screwing and contact.)
• Check IPDU error.(IGBT built-in temp sensor (TH) error)
• Check connection of fan connector and wiring.
• Check fan motor error.
• Check indoor P .C. board error.
• Check influence of outside air control.
• Check indoor type code (DN=10) and the capacity code (DN=11).
• Check full close operation of outdoor PMV (1, 2).
• Check Pd and Ps sensor error.
• Check clogging of SV2 circuit.
• Check clogging of balance pipe.
• Check clogging of SV3B circuit.
• Check outdoor P .C. board (I/F) error.
• Check capillary clogging of oil return circuit from oil separator.
• Check leakage of check valve of the main discharge pipe.
• Check refrigerant shortage.
• Check full open of outdoor service valves (gas side, liquid side).
• Check outdoor PMV clogging (PMV1, 2).
• Check characteristics of TS1 sensor resistance value.
• Check 4-way valve error.
• Check leakage of SV4 circuit.
• Check refrigerant shortage.
• Check outdoor PMV clogging (PMV1, 2).
• Check characteristics of TD1, TD2 sensor resistance value.
• Check indoor air filter clogging.
• Check pipe clogging.
• Check SV4 circuit (Valve leakage, misinstallation)
• Check full opening of outdoor service valves
(gas side, liquid side).
• Check clogging of outdoor PMV (PMV1, 2).
• Check characteristics of TD2 sensor resistance value.
• Check 4-way valve error.
• Check leakage of SV42 circuit.
• Check SV4 circuit.
(Miscabling and misinstallation of SV41 and SV42)
• Error of 4-way valve error
• Check coil error and connector connection of 4-way valve.
• Check characteristics of TS1/TE1 sensor resistance value.
• Check characteristics of Pd, Ps pressure sensor output voltage.
• Check misconnection of TE1 and TL sensors.