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Troubleshooting
Installer and user reference guide
160
REYQ8~20+REMQ5U7Y1B
VRV IV+ heat recovery
4P561154-1A – 2020.10
Main code
Sub code
Cause
Solution
Master
Slave 1
Slave 2
—
Unit is not prepared to execute
leak detection operation
Refer to requirements to be
able to execute leak detection
operation.
—
Indoor unit is out of
temperature range for leak
detection operation
Retry when ambient conditions
are satisfied.
—
Outdoor unit is out of
temperature range for leak
detection operation
Retry when ambient conditions
are satisfied.
—
Too low pressure was noticed
during leak detection operation
Restart leak detection
operation.
—
Indicates an indoor unit which
is not compatible with leak
detection functionality is
installed (e.g. Hydrobox, …)
Refer to requirements to be
able to execute leak detection
operation.
Summary of Contents for REMQ5U7Y1B
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