Toshiba RAV-SM304MUT-E Service Manual page 49

Error mode detected by outdoor unit
The check code has been ramified from 4 series and after
The ramified check code is displayed only when both the indoor unit and the outdoor unit are 4 series and after.
(Ex. Combination of RAV-SM1404BT-E with RAV-SP1404AT-E)
When the outdoor unit is 3 series and before, the conventional check code is displayed.
(Ex. Combination of RAV-SM1404BT-E and RAV-SM1403AT-E: Indoor unit only is 4 series.)
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
AMP Air Conditioning
Operation of diagnostic function
Status of
air conditioner
Continue
Condition
1. Check discharge temp. sensor (TD).
Displayed when
Stop
error is detected
2. Check outdoor P .C. board.
1. Check temp. sensor (TE).
Displayed when
Stop
error is detected
2. Check outdoor P .C. board.
1. Check temp. sensor (TL).
Displayed when
Stop
error is detected
2. Check outdoor P .C. board.
1. Check suction temp. sensor (TS).
Displayed when
Stop
error is detected
2. Check outdoor P .C. board.
Stop Displayed when 1. Check temp. sensor (TE, TS).
error is detected
2. Check outdoor P .C. board.
1. Check outside temp. sensor (TO).
Displayed when
error is detected
2. Check outdoor P .C. board.
Displayed when 1. Check outdoor P .C. board.
Stop
error is detected (Q201 is incorporated in TH sensor.)
Displayed when 1. Check outdoor P .C. board.
Stop
error is detected
Displayed when 1. Outdoor service P .C. board
Stop
error is detected Check model type setting jumper wire.
Displayed when 1. Check outdoor P .C. board
Stop
error is detected
2. Connection check for each P .C. board.
1. Check screw tightening between PC. Board and heat
Displayed when
sink and check radiator grease.
Stop
error is detected
2. Check heat sink blast path.
1. Check gas leak, recharge
2. Check full open of service valve.
Displayed when 3. Check PMV (Pulse Motor Valve).
Stop
error is detected
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).
Displayed when
Stop
error is detected 3. Check indoor heat exchanger sensor (TC).
4. Check 4-way valve coil.
5. Check PMV (Pulse Motor Valve).
1. Check power supply voltage.
Displayed when
Stop
2. Overload operation of refrigerating cycle
error is detected
1. Trouble of compressor (Lock, etc.): Replace compressor.
Displayed when
Stop 2. Wiring error of compressor (Open phase)
error is detected
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Judgment and measures