Toshiba RAV-HM301SDTY-E Service Manual page 40

Error mode detected by outdoor unit
Operation of diagnostic function
Check
code
Cause of operation
Indoor
unit
Disconnection, short of discharge temp. sensor
F04
(TD)
Disconnection, short of outdoor temp. sensor
F06
(TE)
Disconnection, short of outdoor temp. sensor
F07
(TL)
Disconnection, short of suction temp. sensor
F12
(TS)
F15 Miss-mounting of outdoor temp. sensor (TE, TS)
Disconnection, short of outside temp. sensor
F08
(TO)
Disconnection, short of heat sink temp. sensor
F13
(TH)
F31 Outdoor P.C. EEPROM error
L10 Unset jumper of service P.C. board
Communication error between outdoor P.C.
L29
board MCU
Heat sink overheat error
P07
∗ Heat sink temp. sensor detected over specified
temperature.
Detection of gas leak
∗ Discharge temp. sensor (TD), Suction temp.
P15
sensor (TS) detected temperature over
specified temp.
4-way valve inverse error
∗ After heating operation has started, indoor
heat exchanger temp. lowers under the
P19 specified temp.
∗ After heating operation has started, outdoor
heat exchanger / suction temp. rises over the
specified temp.
Compressor break down
H01
∗ Although operation has started, operation
frequency decreases and operation stops.
Compressor lock
H02
∗ Over-current detection after compressor
start-up
Status of
Condition
air conditioner
Displayed when
Stop
error is detected
Displayed when
Stop
error is detected
Displayed when
Stop
error is detected
Displayed when
Stop
error is detected
Stop Displayed when
error is detected
Displayed when
Continue
error is detected
Displayed when
Stop
error is detected
Displayed when
Stop
error is detected
Displayed when
Stop
error is detected
Displayed when
Stop
error is detected
Displayed when
Stop
error is detected
Displayed when
Stop
error is detected
Displayed when
Stop
error is detected
Displayed when
Stop
error is detected
Displayed when
Stop
error is detected
– 40 –
Judgment and measures
1. Check discharge temp. sensor (TD).
2. Check outdoor P.C. board.
1. Check temp. sensor (TE).
2. Check outdoor P.C. board.
1. Check temp. sensor (TL).
2. Check outdoor P.C. board.
1. Check suction temp. sensor (TS).
2. Check outdoor P.C. board.
1. Check temp. sensor (TE, TS).
2. Check outdoor P.C. board.
1. Check outside temp. sensor (TO).
2. Check outdoor P.C. board.
1. Check outdoor P.C. board.
Outdoor IGBT built-in temperature sensor (TH) error
1. Check outdoor P.C. board.
1. Outdoor service P.C. board
Check model type setting jumper wire.
1. Check outdoor P.C. board
2. Connection check for each P.C. board.
1. Check screw tightening between PC. Board and heat
sink and check radiator grease.
2. Check heat sink blast path.
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).
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).
1. Check power supply voltage.
2. Overload operation of refrigerating cycle
1. Trouble of compressor (Lock, etc.): Replace compressor.
2. Wiring error of compressor (Open phase)