Toshiba Estia RUA-CP1701H, Руководство по обслуживанию

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Monobloc Outdoor Unit Service Manual
77
Check Code Determination and action
A
lar
m
[
P
3
44]
C
ur
ren
t A
lar
m
[P
346
] t
o [
P
3
49]
P
a
s
t A
la
rm
[P
350
] t
o [
P
3
54]
Operational Cause Unit Status
Automatic
Reset
134 71 Suction pressure too low
Compressor
stop
O
Alarm reset by resetting the power supply to the Monobloc unit. Error
becomes definite after retrying operation for 8 times.
1. Check clogging of outdoor PMV.
2. Check 2-way valve circuit.
3. Check Ps sensor error (LP).
4. Check clogging of refrigerant filter.
5. Check clogging of refrigerant pipe.
6. Check of fan operation (In heating mode).
7. Check short of refrigerant.
244
72

High Pressure System error
(Pressure Switch,
Compressor Case
Temperature, Power Supply)
Stop O
Alarm reset by resetting the power supply to the Monobloc unit. Error
becomes definite after retrying operation for 10 times.
1. Check outdoor heat exchanger sensor (TL).
2. Check fan.
3. Check PMV (Pulse Motor Valve).
4. Check clogging and short circuit of heat exchanger.
5. Overcharge of refrigerant. Recharge
131 73 Current detection circuit error
Compressor
stop
O
Alarm reset by resetting the power supply to the Monobloc unit. Error
becomes definite after retrying operation for 8 times. Error detected in either
of the following
condition;
1) Motor current sensor failure
227
74

Discharge temperature too
high Compressor
stop
O
Alarm reset by resetting the power supply to the Monobloc unit. Error
becomes definite after retrying operation for 4 times.
1. Check refrigerant circuit (Gas leak).
2. Check electronic expansion valve.
3. Check discharge temp. sensor (TD).
229 75
Missing phase in power
cable Compressor
stop
O
Alarm reset by resetting the power supply to the Monobloc unit. Error
becomes definite after retrying operation for 8 times.
1. Check power supply voltage.
231 76
Inverter heatsink temperature
too high Compressor
stop
O
Alarm reset by resetting the power supply to the Monobloc unit. Error
becomes definite after retrying operation for 4 times.
1. Check heat sink airflow path.
- 80
Real time clock failure on
NHC board
Continue X
- 81
EEPROM corrupted on NHC
board
Continue O
127 82
Inverter EEPROM not
readable of EEPROM
number out of range
Stop O
Alarm reset by resetting the power supply to the Monobloc unit. Error caused
by delay of communication
- 90 Invalid configuration Stop X Automatic reset when configuration is correct
- 100 Emergency stop Stop X Automatic reset when [P055] is reset
- 200 External alarm Continue X Automatic reset when contact is closed

Header / Follower Alarms
If the Header unit cannot communicate with all of its Follower units for 10 minutes, then the alarm (23) will be triggered – the
Header unit will continue to operate.
If the Follower unit does not receive any information from the Header unit for more than 10 minutes, then the alarm (24) will be
triggered – the Follower unit will be stopped

High Pressure Switch
1) When the high pressure switch operates, the operation of the compressor is terminated
2) Alarm 33 is activated, and does power cycle to re-initiate the alarm and re-start unit

Compressor Case Thermostat
1) When the compressor case thermostat operates, the operation of the compressor is terminated
2) The compressor restarts after 2 minutes 30 seconds using [1] alarm count.
3) An alarm “70” is confirmed with the alarm count [10]

Over-Current Preventative Control
1) Operation of the compressor is stopped when the over-current protective circuit detects an alarm current.
2) The compressor restarts after 2 minutes 30 seconds using [1] as an alarm count.
After restart, the alarm count is cleared when operation continues for 6 minutes or more.
3) An alarm is confirmed when the alarm count takes a value of [8].
The alarm display is “62”, “64”, or “65”

High Pressure Release Control
1) The operation frequency is controlled to restrain abnormal rising pressure by TL sensor in Cooling operation and TR in
Heating operation.
2) When TL sensor in Cooling operation or TR in Heating operation detects abnormal temperature of the stop zone, stop the
compressor and the alarm count becomes [1].
3) When the compressor stopped with 2), the operation restarts from the point of the normal operation zone (e point or lower)
where it returned after 2 minutes 30 seconds.