Toshiba RAV-RM 561MUT-E - Page 66

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Failure mode detected by outdoor unit
Operation of diagnostic function
Check code
Status of
air conditioner
ConditionCause of operation
Judgment and measures
Indoor unit
F04
Disconnection, short of discharge
temp. sensor (TD)
Stop
Displayed when
trouble is detected
1. Check discharge temp. sensor (TD).
2. Check outdoor P.C. board (MCC-1705).
F06
Disconnection, short of outdoor temp.
sensor (TE)
Stop
Displayed when
trouble is detected
1. Check temp. sensor (TE).
2. Check outdoor P.C. board (MCC-1705).
F07
Disconnection, short of outdoor temp.
sensor (TL)
Stop
Displayed when
trouble is detected
1. Check temp. sensor (TL).
2. Check outdoor P.C. board (MCC-1705).
F12
Disconnection, short of suction temp.
sensor (TS)
Stop
Displayed when
trouble is detected
1. Check suction temp. sensor (TS).
2. Check outdoor P.C. board (MCC-1705).
F15
Miss-mounting of outdoor temp.
sensor (TE, TS)
Stop
Displayed when
trouble is detected
1. Check temp. sensor (TE, TS).
2. Check outdoor P.C. board (MCC-1705).
F08
Disconnection, short of outside temp.
sensor (TO)
Continue
Displayed when
trouble is detected
1. Check outside temp. sensor (TO).
2. Check outdoor P.C. board (MCC-1705).
F13
Disconnection, short of heat sink
temp. sensor (TH)
Stop
Displayed when
trouble is detected
L29
Communication trouble between
outdoor P.C. board MCU
Stop
Displayed when
trouble is detected
1. Check outdoor P.C. board (MCC-1705).
(Q201 is incorporated in TH sensor.)
F31Outdoor P.C. EEPROM trouble Stop
Displayed when
trouble is detected
1. Check outdoor P.C. board (MCC-1705).
L10 Unset jumper of service P.C. board Stop
Displayed when
trouble is detected
1. Outdoor service P.C. board
Check model type setting jumper wire.
1. Check outdoor P.C. board
(MCC-1705).
F23 Ps sensor trouble Stop
Displayed when
trouble is detected
1. Check connection of Ps sensor connector.
2. Check failure of Ps sensor.
3. Check compressing power trouble of compressor.
4. Check 4-way valve trouble.
5. Check outdoor P.C. board trouble.
P07
Heat sink overheat trouble
∗ Heat sink temp. sensor detected
over specified temperature.
Stop
Displayed when
trouble is detected
1. Check screw tightening between PC. Board and heat
sink and check radiator grease (MCC-1705).
2. Check heat sink blast path.
H02
Compressor lock
∗ Over-current detection after
compressor start-up
Stop
Displayed when
trouble is detected
1.
Trouble of compressor (Lock, etc.): Replace compressor.
2. Wiring trouble of compressor (Open phase)
H03 Current detection circuit trouble Stop
Displayed when
trouble is detected
1. Check outdoor P.C. board (MCC-1705).
(AC current detection circuit)
P15
Detection of gas leak
∗ Discharge temp. sensor (TD),
Suction temp. sensor (TS) detected
temperature over specified temp.
Stop
Displayed when
trouble is detected
1. Check gas leak, recharge
2. Check full open of service valve.
3. Check PMV (Pulse Motor Valve).
4. Check broken pipe.
5. Check discharge temp. sensor (TD), suction temp.
sensor (TS).
P19
4-way valve inverse trouble
∗ After heating operation has started,
indoor heat exchanger temp. lowers
under the specified temp.
∗ After heating operation has started,
outdoor heat exchanger / suction
temp. rises over the specified temp.
Stop
Displayed when
trouble is detected
1. Check operation of 4-way valve.
2. Check outdoor heat exchanger (TE), suction temp.
sensor (TS).
3. Check indoor heat exchanger sensor (TC).
4. Check 4-way valve coil.
5. Check PMV (Pulse Motor Valve).
H01
Compressor break down
∗ Although operation has started,
operation frequency decreases and
operation stops.
Stop
Displayed when
trouble is detected
1. Check power supply voltage. (AC198 to 264V)
2. Overload operation of refrigerating cycle