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Troubleshooting
Service manual
157
REYQ8~20+REMQ5U7Y1B
VRV IV+ Heat Recovery
ESIE18-15B – 2020.05
2.3.150 U3-04 – Test run ended abnormally
Trigger
Effect
Reset
Test run ended
abnormally.
Unit will NOT operate.
Restart test run.
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed order.
1
Check for an indoor unit related error code. See
188] for an overview of the indoor unit related error codes. To
solve the error, see the service manual of the respective indoor unit(s) for
more information.
2
Check the error history, see
14]. Solve the error code(s)
using the error based troubleshooting, see
22].
3
Check if communication between outdoor unit and indoor units is initialised.
Check field setting 1‑10 for count of indoor units, see
455]. If less indoor units shown than expected, communication
between 1 or more indoor unit(s) and outdoor unit is NOT correct. Check the
F1‑F2 transmission line between the indoor unit and outdoor unit, see
356].
Possible cause:
Faulty or interruption in transmission line between indoor
units and outdoor unit.
4
Perform a test run from the outdoor unit. See installer reference guide for
more information.
INFORMATION
If all procedures listed above have been performed and the problem is still present,
contact the helpdesk.
2.3.151 U3-05 – Test run aborted on initial transmission
Trigger
Effect
Reset
Test run could NOT start
or abort due to
transmission issues.
Unit will NOT operate.
Restart test run.
To solve the error code
INFORMATION
It is recommended to perform the checks in the listed order.
1
Check if communication between outdoor unit and indoor units is initialised.
Check field setting 1‑10 for count of indoor units, see
455]. If less indoor units shown than expected, communication
between 1 or more indoor unit(s) and outdoor unit is NOT correct. Check the
F1‑F2 transmission line between the indoor unit and outdoor unit, see
356].
Summary of Contents for VRV IV+
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