Hitachi ADVANCED COLOR PC-ARFH2E Manuel D'installation Et D'utilisation page 125

2.2 Alarm codes description
Code Text
3 Outdoor unit not detected
10 2n DHW thermistor anomaly
Water inlet thermistor anomaly (THMwi)
11
Water outlet thermistor anomaly (THMwo)
12
13 Indoor Liquid Pipe Thermistor anomally
14 Indoor Gas Pipe Thermistor anomally
15 Water Circuit 2 thermistor anomaly
16 Water DHW thermistor anomally
Auxiliary sensor 2 anomaly (THMaux2)
17
18 Auxiliary sensor 1 thermistor anomaly
19 Water Plate HEX pipe thermistor anomally
25 Auxiliary sensor 3 thermistor anomaly
Water pressure sensor (WPS) abnormality
26
Water inlet thermistor anomaly (THMwi)
33
Water outlet thermistor anomaly (THMwo)
34
Incorrect Unit controller setting
40
60 Alarm on all the modules
Cascade stopped communicating
61
Flow & Water Pump malfunction
70
72 Thermostat Heater Alarm
73 Mixing over-temperature limit
Unit over-temperature limit protection
74
Freeze Protection by cold liquid/gas
75
temperature on refrigerant side
Freeze Protection by cold liquid / gas
76
temperature on refrigerant side
Communication error with wireless receiver
77
RF Communication failure
78
Unit Capacity setting Error
79
H-LINK - RCS transmission error
80
Momentary Power interruption
81
83 Hydraulic alarm pressure
PMEN0597 rev.1 - 06/2023
Origin Retry stop code
Transmission -
Indoor -
Indoor -
Indoor -
Indoor -
Indoor -
Indoor -
Indoor -
Indoor -
Indoor -
Indoor -
Indoor -
Indoor -
Mirror Module -
Mirror Module -
Indoor -
Comunication
-
YCC stops sending messages to slave unit since YCC has been powered OFF or disconnected
Comunication
-
Water flow is not detected in the hydraulic cycle or Pump defective
Indoor P-70
Indoor -
Indoor -
Indoor P-74
Indoor -
Indoor -
Indoor -
No Opentherm/H-Link communication for a continuous period of 10 minutes.
-
Unit controller
There is no communication for 1 hour with one or two RF receivers which are bound to the
Indoor -
-
Unit controller
Indoor - outdoor -
No H-link communication for a continuous period of 1 minute between Indoor and LCD User
Indoor -
-
Unit controller
Indoor P-81
Indoor P-83
Main factors
Loose, disconnected, broken or short-circuited connector
from the H-Link Line or H-Link line has been damaged
High temperature is detected in Electric Heater
Circuit 2 supply temperature > Target temperature + offset
Two > Tmax +5K
RF-Bridge.
There is no concordance between indoor outdoor unit capacity
control by connection wiring (breaking, wiring error, etc.)
Water pressure of the system is below 0.5 bar
Pumps allowed Heaters allowed Compressor allowed
✓ ✓ ✓ ✓
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X X X
X X X
X X X
X X X
X X X
X X X
X X X
X X X
X X X
X X X
X X X
✓ ✓
X X
✓ ✓
X X
X X X
✓ ✓ ✓ ✓
X
✓ ✓ ✓ ✓
X
✓ ✓ ✓ ✓ ✓ ✓
✓ ✓ ✓ ✓ ✓ ✓
X X X
X X X
X X X
X X X
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