Hitachi PC-ARFH1E - Alarm Codes Description

66
PMEN0602 rev.0 - 05/2023
2
ALARM CODE INDICATION ON REMOTE CONTROL SWITCH
TROUBLESHOOTING
2.1.1 Alarm codes descripon
 NOTE
• (o): Opon congurable from Unit controller. This alarm will be displayed if the system has been congured.
• o: Default. This alarm will be displayed in the Unit controller.
• –: No applicable.
Alarm
Code
Retry
Stop
Code
YUTAKI
S/SC
YUTAKI
S80
YUTAKI
M
Origin Detail of Abnormality Main Factors
Alarms generated by PCB
3 - o o o Communicaon Transmission Alarm (Not outdoor unit detected) Loose, disconnected, broken or short-circuited connector
11 - o o o Indoor Water inlet thermistor abnormally (THMwi) Loose, disconnected, broken or short-circuited connector
12 - o o o Indoor Water outlet thermistor abnormally (THMwo) Loose, disconnected, broken or short-circuited connector
13 – o o o Indoor Indoor Liquid Pipe Temp Thermistor Abnormality (THMl) Loose, disconnected, broken or short-circuited connector
14 – o o o Indoor Indoor Gas Pipe Temperature Thermistor Abnormality (THMg) Loose, disconnected, broken or short-circuited connector
15 - (o) (o) (o) Indoor Water Circuit 2 thermistor abnormally (THMwo2) Loose, disconnected, broken or short-circuited connector
16 - (o) (o) (o) Indoor Water DHW thermistor abnormally (THMdhwt) Loose, disconnected, broken or short-circuited connector
17 - (o) (o) (o) Indoor Auxiliary sensor 2 thermistor abnormally (THMaux2) Loose, disconnected, broken or short-circuited connector
18 - (o) (o) (o) Indoor Auxiliary sensor 1 thermistor abnormally (THMaux1) Loose, disconnected, broken or short-circuited connector
19 - o - - Indoor Water Plate HEX pipe thermistor abnormally (THMwohp) Loose, disconnected, broken or short-circuited connector
19 - o - Indoor Sucon R134a pipe thermistor abnormally (THMs) Loose, disconnected, broken or short-circuited connector
23 - o - Indoor Discharge R134a pipe thermistor abnormally (THMd) Loose, disconnected, broken or short-circuited connector
25 - (o) (o) (o) Indoor Auxiliary sensor 3 thermistor abnormally (THMaux3) Loose, disconnected, broken or short-circuited connector
40 - o o o Indoor Incorrect LCD seng Current LCD conguraon does not allow proper operaon
61 - (o) (o) (o) Indoor
No Cascade Messages.
Triggered in case unit is congured to work against cascade control and:
- No messages have been received for 180 seconds.
- No messages have been received from beginning of operaon.
In case this alarm appears, soware stops Indoor and Outdoor operaons unl communicaon is restored.
Loose, disconnected, broken or short-circuited connector
62 - (o) (o) (o) Indoor
Central mismatch.
Triggered in case YUTAKI CASCADE CONTROLLER is congured and they are received central messages or central
control is congured and they are received messages form YUTAKI CASCADE CONTROLLER.
In case this alarm appears, soware stops Indoor and Outdoor operaons unl system is properly congured
Loose, disconnected, broken or short-circuited connector
63 - (o) (o) (o) Communicaon Transmission error between Central and indoor communicaon
Indoor fuse meltdown, Indoor/central connecon wiring (breaking, wiring
error, etc.)
70 P70 o o o Indoor Hydraulic alarm ow & Water Pump malfuncon Water ow is not detected in the hydraulic cycle or Pump defecve
83 P83 o o o Indoor Hydraulic alarm pressure Water pressure is not detected in the hydraulic cycle
72 o - - Indoor Thermostat Heater Alarm High temperature is detected in Electric Heater
73 o o o Indoor Mixing over-temperature limit protecon for Mixed circuit. Circuit 2 supply temperature > Target temperature + oset
74 P74 o o o Indoor Unit over-temperature limit protecon Two > Tmax +5K
75 - o o o Indoor Freeze Protecon by Cold water inlet, outlet temperature detecon
76 - o o o Indoor Freeze Protecon Stop by indoor liquid temperature thermistor
77 - o o o Indoor-LCD Receiver Communicaon failure
No Opentherm/Hlink communicaon for a connuous period of 10
minutes.
78 o o o Indoor-LCD RF Communicaon failure
There is no communicaon for 1 hour with on or two RF receives which
are bound to the RF-Bridge.