Toshiba Estia RUA-CP1701H, Руководство по обслуживанию

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Monobloc Outdoor Unit Service Manual
75
9.3.5. How to diagnose by error code
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
- 1 EWT sensor failure Continue X
Automatic reset when the sensor returns within the correct range.
1. Check EWT sensor (EWT)
2. Check NHC board
- 2 LWT sensor failure Stop X
Automatic reset when the sensor returns within the correct range.
1. Check LWT sensor (LWT)
2. Check NHC board
- 3
Refrigerant Temperature
(TR) sensor failure Compressor
stop
X
Automatic reset when the sensor returns within the correct range.
1. Check TR sensor (TR)
2. Check NHC board
- 4 OAT sensor failure Continue X
Automatic reset when the sensor returns within the correct range.
1. Check additional OAT sensor (OAT)
2. Check NHC board
- 5 DHW_TT sensor failure DHW failed X
Automatic reset when the sensor returns within the correct range.
1. Check DHW sensor (DHW)
2. Check NHC board
- 6 CHWSTEMP sensor failure X
Automatic reset when the sensor returns within the correct range.
1. Check CHWSTEMP sensor (CHWSTEMP)
2. Check NHC board
- 7 IAT sensor failure Continue X
Automatic reset when the sensor returns within the correct range.
1. Check IAT sensor (IAT)
2. Check NHC board
- 8
RC indoor temperature
failure
Continue X
Automatic reset when the sensor returns within the correct range.
1. Check RC indoor temperature sensor
2. Check NHC board
- 9 Spare sensor failure Continue X
Automatic reset when the sensor returns within the correct range.
1. Check spare sensor
2. Check NHC board
100 10
Inverter discharge
temperature (TD) sensor
failure
Compressor
stop
O
Alarm reset by resetting the power supply to the Monobloc unit. Error
becomes definite after retrying operation 4 times.
1. Check discharge temperature sensor (TD)
102 11
Inverter air exchanger
temperature (TE) sensor
failure
Compressor
stop
O
Alarm reset by resetting the power supply to the Monobloc unit. Error
becomes definite after retrying operation 4 times.
1. Check temperature sensor (TE)
103 12
Inverter liquid temperature
(TL) sensor failure Compressor
stop
O
Alarm reset by resetting the power supply to the Monobloc unit. Error
becomes definite after retrying operation 4 times.
1. Check temperature sensor (TL)
104 13 Inverter TO sensor failure Continue O
Alarm reset by resetting the power supply to the Monobloc unit.
Unit operation continues in backup mode. TO sensor value fixed to 30°C in
cooling, 10°C in heating. Backup mode is cancelled when any other value is
detected by TO sensor.
1. Check outside temperature sensor (TO)
108 14
Inverter Suction Temperature
(TS)
Sensor failure
Compressor
stop
O
Alarm reset by resetting the power supply to the Monobloc unit. Error
becomes definite after retrying operation 4 times.
1. Check suction temperature sensor (TS)
109 15
Inverter heatsink
temperature failure Compressor
stop
O
Alarm reset by resetting the power supply to the Monobloc unit. Error
becomes definite after retrying operation 8 times.
1. Check correct fan operation
111 16
Inverter TE & TS sensors
wrongly connected Compressor
stop
O
Alarm reset by resetting the power supply to the Monobloc unit. Error
becomes definite after retrying operation 4 times.
1. Check temperature sensor (TE, TS)
119 17
Inverter suction pressure
(PS) sensor failure Compressor
stop
O
Alarm reset by resetting the power supply to the Monobloc unit. Error
becomes definite after retrying operation for 2 times for disconnection
detection and 4 times for high pressure.
1. Check suction pressure sensor (LP)
- 20
Loss of communication with
RC
Continue X
Alarm reset when a new message is received from the RC
1. Check RC connections (RC & Monobloc)
- 21
Loss of communication with
inverter Compressor
stop
X
Alarm reset when a new message is received from the inverter.
1. Check connections between inverter PCB & NHC board
221 22
Loss of communication
between inverter PCB’s Compressor
stop
O
Alarm caused by delay in communication. Alarm reset by resetting the power
supply to the Monobloc unit.
-
23

Loss of communication with
Follower units Header
continues
X
If the Header unit cannot communicate with Follower units for 10 minutes
Automatic reset when communication between Follower units is restored.
- 24
Loss of communication with
Header unit
Stop X
If the Follower units cannot communicate with Header unit for 10 minutes
Automatic reset when communication with the Header unit is restored.
- 31 Safety input
Unit stop OR
heat stop OR
cool stop
X Automatic reset when the safety input is closed.
- 32 Flow switch failure
Compressor
stop
O
Alarm reset by resetting the power supply to the Monobloc unit. Error
becomes definite after retrying operation for 5 times.
1. Check flow switch operation / connections
2. Check / clean water filter