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Hitachi YUTAKI RWM-2R1E User Manual

Hitachi YUTAKI RWM-2R1E
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ENGLISH
Alarm
Code
Retry
Stop
Code
YUTAKI
S/SC
YUTAKI
S80
YUTAKI
M
Origin Detail of Abnormality Main Factors
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 operation.
In case this alarm appears, software
stops Indoor and Outdoor operations
until communication 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, software
stops Indoor and Outdoor operations
until system is properly congured
Loose, disconnected, broken or
short-circuited connector
63 - (o) (o) (o) Communication
Transmission error between Central
and indoor communication
Indoor fuse meltdown, Indoor/central
connection wiring (breaking, wiring
error, etc.)
70 P70 o o o Indoor
Hydraulic alarm ow & Water Pump
malfunction
Water ow is not detected in the
hydraulic cycle or Pump defective
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
protection for Mixed circuit.
Circuit 2 supply temperature > Target
temperature + offset
74 P74 o o o Indoor Unit over-temperature limit protection Two > Tmax +5K
75 - o o o Indoor
Freeze Protection by Cold water inlet,
outlet temperature detection
76 - o o o Indoor
Freeze Protection Stop by indoor
liquid temperature thermistor
77 - o o o Indoor-LCD Receiver Communication failure
No Opentherm/Hlink communication
for a continuous period of 10 minutes.
78 o o o Indoor-LCD RF Communication failure
There is no communication for 1 hour
with on or two RF receives which are
bound to the RF-Bridge.
79 - o o o Indoor -outdoor Unit Capacity setting Error
There is no concordance between
indoor outdoor unit capacity
80 - o o o
Indoor LCD H-link RCS transmission error No H-link communication for a
continuous period of 1 minute
between Indoor and LCD User
control by connection wiring
(breaking, wiring error, etc.)
LCD (If no H-LINK RCS has no power)
81 o o o Indoor
“Momentary Power interruption” or
“Low voltage detected”
TROUBLESHOOTING
PMML0575 rev.2 - 03/2022
315

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Hitachi YUTAKI RWM-2R1E Specifications

General IconGeneral
BrandHitachi
ModelYUTAKI RWM-2R1E
CategoryAir Conditioner
LanguageEnglish

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