Hitachi PC-ARFH1E Manual página 75

2.1.1 Alarm codes description

NOTE
• (o): Option configurable from Unit controller. This alarm will be displayed if the system has been configured.
• o: Default. This alarm will be displayed in the Unit controller.
• –: No applicable.
Retry
Alarm YUTAKI YUTAKI YUTAKI
Stop
Code
S/SC S80 M
Code
o o o Communication Transmission Alarm (Not outdoor unit detected)
3 -
o o o
11 -
o o o
12 -
o o o
13 –
o o o
14 –
(o) (o) (o)
15 -
(o) (o) (o)
16 -
(o) (o) (o)
17 -
(o) (o) (o)
18 -
o
19 - - -
o
19 - -
o
23 - -
(o) (o) (o)
25 -
o o o
40 -
(o) (o) (o)
61 -
(o) (o) (o)
62 -
(o) (o) (o) Communication Transmission error between Central and indoor communication
63 -
P70 o o o
70
P83 o o o
83
o
72 - -
o o o
73
P74 o o o
74
o o o
75 -
o o o
76 -
o o o
77 -
o o o
78
PMEN0602 rev.0 - 05/2023
Origin
Indoor Water inlet thermistor abnormally (THMwi)
Indoor Water outlet thermistor abnormally (THMwo)
Indoor Indoor Liquid Pipe Temp Thermistor Abnormality (THMl)
Indoor Indoor Gas Pipe Temperature Thermistor Abnormality (THMg)
Indoor Water Circuit 2 thermistor abnormally (THMwo2)
Indoor Water DHW thermistor abnormally (THMdhwt)
Indoor Auxiliary sensor 2 thermistor abnormally (THMaux2)
Indoor Auxiliary sensor 1 thermistor abnormally (THMaux1)
Indoor Water Plate HEX pipe thermistor abnormally (THMwohp)
Indoor Suction R134a pipe thermistor abnormally (THMs)
Indoor Discharge R134a pipe thermistor abnormally (THMd)
Indoor Auxiliary sensor 3 thermistor abnormally (THMaux3)
Indoor Incorrect LCD setting
No Cascade Messages.
Triggered in case unit is configured to work against cascade control and:
Indoor - No messages have been received for 180 seconds.
- No messages have been received from beginning of operation.
In case this alarm appears, software stops Indoor and Outdoor operations until communication is restored.
Central mismatch.
Triggered in case YUTAKI CASCADE CONTROLLER is configured and they are received central messages or central
Indoor
control is configured and they are received messages form YUTAKI CASCADE CONTROLLER.
In case this alarm appears, software stops Indoor and Outdoor operations until system is properly configured
Indoor Hydraulic alarm flow & Water Pump malfunction
Indoor Hydraulic alarm pressure
Indoor Thermostat Heater Alarm
Indoor Mixing over-temperature limit protection for Mixed circuit.
Indoor Unit over-temperature limit protection
Indoor Freeze Protection by Cold water inlet, outlet temperature detection
Indoor Freeze Protection Stop by indoor liquid temperature thermistor
Indoor-LCD Receiver Communication failure
Indoor-LCD RF Communication failure
Detail of Abnormality Main Factors
Loose, disconnected, broken or short-circuited connector
Loose, disconnected, broken or short-circuited connector
Loose, disconnected, broken or short-circuited connector
Loose, disconnected, broken or short-circuited connector
Loose, disconnected, broken or short-circuited connector
Loose, disconnected, broken or short-circuited connector
Loose, disconnected, broken or short-circuited connector
Loose, disconnected, broken or short-circuited connector
Loose, disconnected, broken or short-circuited connector
Loose, disconnected, broken or short-circuited connector
Loose, disconnected, broken or short-circuited connector
Loose, disconnected, broken or short-circuited connector
Loose, disconnected, broken or short-circuited connector
Current LCD configuration does not allow proper operation
Loose, disconnected, broken or short-circuited connector
Loose, disconnected, broken or short-circuited connector
Indoor fuse meltdown, Indoor/central connection wiring (breaking, wiring
error, etc.)
Water flow is not detected in the hydraulic cycle or Pump defective
Water pressure is not detected in the hydraulic cycle
High temperature is detected in Electric Heater
Circuit 2 supply temperature > Target temperature + offset
Two > Tmax +5K
No Opentherm/Hlink communication for a continuous period of 10
minutes.
There is no communication for 1 hour with on or two RF receives which
are bound to the RF-Bridge.
2
66