Toshiba MMY-MAP0804FT8(ZG)-E - Page 223

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No
No
No
Ye s Ye s Ye s Ye s
Ye s
Ye s
Ye s
Ye s
Ye s
No
No
ABNORMAL
ABNORMAL
NORMAL NORMAL
No
No
(C)
No
No
Single heating operation
Does heating
indoor fan normally
operate?
Is indoor PMV
normal?
Is check valve
of main
discharge pipe
normal?
Is SV5 circuit normal?
Are any indoor
units in different
refrigerant circuit
connected?
Are
characteristics of
sensor TC2 and TCJ
resistance
normal?
Is connector
connection and coil
normal?
Is connector
connection, condenser
or fan motor normal?
Repair faulty parts. Repair faulty parts. Repair check valve. → Replace Repair SV5 circuit. Check and correct wiring. Replace TC2 or TCJ sensor.
Refrigerant overcharge, clogging, pipe breakage, abnormal overload
Check indoor P.C. board. Faulty → Replace
(Coil error, choke, disconnection of cables, etc.)
r
(Check it using the miswiring check function of the outdoor unit.)
Eliminate the interference.
Is there any interference
of heat-exchanging of
indoor unit?
1. Filter clogging
2. Heat exchanger
clogging
3. Air short circuit
No
Is there
clogging in any
valves?
Replace PMV body.
4-way
valve operation
check
Replace 4-way valve.
SV11
circuit clogging
check
Replace defective parts.
No No
Ye s Ye s
Ye s Ye s Ye s
No No No
* Resistance of the winding: 1.1-1.7Ω (between R-S, R-T and S-T)
[P22]
Check code CauseCheck code name
Outdoor fan IPDU error
1. Fan lock 2. Fan IPDU P.C. board error 3. Overload 4. External cause such as blast
Sub-code:
0∗: IGBT short circuit 1∗: Position detection circuit error 3∗: Motor lock 4∗: Motor current error detected C∗: TH sensor temperature error D∗: TH sensor error E∗: Fan Vdc error Ignore the indication (0-F) on "∗" digit.
Is wire
connector connection
on fan IPDU P.C. board
normal?
Is not outdoor fan
motor locked?
Is the resistance of
the motor's winding
wire normal?
Is sub-code of
outdoor I/F P.C.
board [0*]?
Is there
no problem such as
stuffing or blast blowing
to discharge port of
outdoor fan?
Correct wire connector connection. Replace motor. Replace fan IPDU. Clear the cause of overload.
Check fan IPDU.
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