Error Mode Detected By Outdoor Unit - Toshiba RAV-SM2242DT-E Service Manual

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-SM1404UT-E with RAV-SM2804AT8-E)
When the indoor unit is 3 series and before, the conventional check code is displayed.
(Ex. Combination of RAV-SM1402BT-E and RAV-SM2804AT8-E: Outdoor unit only is 4 series.)
Operation of diagnostic function
Check code
Indoor unit
Cause of operation
before after
3 series 4 series
Disconnection, short of discharge
F04 F04
temp. sensor (TD)
Disconnection, short of outdoor temp.
F06
sensor (TE)
Disconnection, short of outdoor temp.
F07
sensor (TL)
F06
Disconnection, short of suction temp.
F12
sensor (TS)
Miss-mounting of outdoor temp.
F15
sensor (TE, TS)
Disconnection, short of outside temp.
F08 F08
sensor (TO)
Disconnection, short of heat sink
F13
temp. sensor (TH)
F31 Outdoor P .C. EEPROM error
L10 Unset jumper of service P .C. board
Communication error between
outdoor P .C. board MCU
L29
Heat sink overheat error
P07
∗ Heat sink temp. sensor detected
L29
over specified temperature.
Detection of gas leak
∗ Discharge temp. sensor (TD),
P15
Suction temp. sensor (TS) detected
temperature over specified temp.
4-way valve inverse error
∗ After heating operation has started,
indoor heat exchanger temp. lowers
P19 under the specified temp.
∗ After heating operation has started,
outdoor heat exchanger / suction
temp. rises over the specified temp.
Compressor break down
∗ Although operation has started,
H01 H01
operation frequency decreases and
operation stops.
Compressor lock
H02 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
Displayed when
Stop
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
– 37 –
Judgment and measures
1. Check discharge temp. sensor (TD).
2. Check outdoor P .C. board (MCC-1599).
1. Check temp. sensor (TE).
2. Check outdoor P .C. board (MCC-1599).
1. Check temp. sensor (TL).
2. Check outdoor P .C. board (MCC-1599).
1. Check suction temp. sensor (TS).
2. Check outdoor P .C. board (MCC-1599).
1. Check temp. sensor (TE, TS).
2. Check outdoor P .C. board (MCC-1599).
1. Check outside temp. sensor (TO).
2. Check outdoor P .C. board (MCC-1599).
1. Check outdoor P .C. board (MCC-1599).
(Q201 is incorporated in TH sensor.)
1. Check outdoor P .C. board (MCC-1599).
1. Outdoor service P .C. board
Check model type setting jumper wire.
1. Check outdoor P .C. board
(MCC-1596, MCC-1597, MCC-1599).
2. Connection check between CN802 of MCC-1599 and
CN504 of MCC-1597, and also connection check
between CN505 of MCC-1597 and CN851 of MCC-1596.
1. Check screw tightening between PC. Board and heat
sink and check radiator grease (MCC-1596).
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. (AC342 to 457V)
2. Overload operation of refrigerating cycle
1. Trouble of compressor (Lock, etc.): Replace compressor.
2. Wiring error of compressor (Open phase)