Troubleshooting - Hitachi YUTAKI Series Installation And Operation Manual

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Service manual (262 pages)

Instruction and operation manual (194 pages)

Instruction manual (32 pages)

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Table of Contents

TROUBLESHOOTING

9 TROUBLESHOOTING

N O T E

•

(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.

Alarm code indication on remote control switch:

Alarms for Indoor units:

Retry

Alarm

YUTAKI

Stop

Code

S/SC

Code

–

(o)

145

PMML0510 rev.1 - 10/2019

Alarm indication

YUTAKI

Origin

S80

Communication

Indoor

(o)

Indoor

(o)

Indoor

(o)

Indoor

(o)

Indoor

(o)

Indoor

Alarm code

Detail of Abnormality

Transmission Alarm (Not outdoor

unit detected)

Water inlet thermistor abnormally

(THMwi)

Water outlet thermistor abnormally

(THMwo)

Indoor Liquid Pipe Temp Thermistor

Abnormality (THMl)

Indoor Gas Pipe Temperature

Thermistor Abnormality (THMg)

Water Circuit 2 thermistor

abnormally (THMwo2)

Water DHW thermistor abnormally

(THMdhwt)

Auxiliary sensor 2 thermistor

abnormally (THMaux2)

Auxiliary sensor 1 thermistor

abnormally (THMaux1)

Water Plate HEX pipe thermistor

abnormally (THMwohp)

Suction R134a pipe thermistor

abnormally (THMs)

Discharge R134a pipe thermistor

abnormally (THMd)

Auxiliary sensor 3 thermistor

abnormally (THMaux3)

Incorrect LCD setting

Main Factors