21
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Configuration
Installer and user reference guide
130
REMA5+REYA8~20A7Y1B
VRV 5 heat recovery
4P687640-1 – 2022.07
2×
a
b
c
a
Front plate
b
Main PCB with three 7‑segment displays and three push buttons
c
Electrical component box service cover
Operate the switches and push buttons with an insulated stick (such as a closed
ball-point pen) to avoid touching of live parts.
Make sure to re-attach the inspection cover into the electronic component box
cover and to close the front plate's inspection cover after the job is finished. During
operation of the unit the front plate of the unit should be attached. Settings are
still possible to be made through the inspection opening.
NOTICE
Make sure that all outside panels, except for the service cover on the electrical
component box, are closed while working.
Close the lid of the electrical component box firmly before turning on the power.
21.1.4 To access mode 1 or 2
Initialisation: default situation
NOTICE
Turn ON the power 6 hours before operation in order to have power running to the
crankcase heater and to protect the compressor.
Turn on the power supply of the outdoor unit and all indoor units. When the
communication between indoor units and outdoor unit(s) is established and
normal, the 7‑segment display indication state will be as below (default situation
when shipped from factory).
Stage
Display
When turning on the power supply: flashing as indicated.
First checks on power supply are executed (1~2 min).
When no trouble occurs: lighted as indicated (8~10 min).
Ready for operation: blank display indication as
indicated.
7‑segment display indications:
Off
Blinking
