MRV Communications AE092FCAHA Manual de servicio Pagina 68

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Note: 1. When abnormal phenomenon occur, the indoor unit indicator will indicate abnormality according
to the abnormal parts.
2. When temperature of the evaporator inlet is lower than 0 and keeps for 5 minutes, unit will operate
in anti-icing mode.
Cooling operation
Swing
Swing flap in the
cooling standard
position
Swing action
Automatic
fan speed
Operate in fan
speed set
Adjust fan speed according
to temperature set and in
air temperature
No
Yes
Yes
No
Test run
Rated
operation
Electronic expansion valve:
overheat control Swing flap:
cooling standard position
Fan motor: high speed
Electronic expansion valve:
overheat control. Swing flap:
cooling standard position, Fan
motor: auto
Emergency
operation n
Electronic expansion valve:
overheat control, send turning
on unit signal to outdoor unit
According to the
state of thermostat
Electronic expansion valve:
close, send turning off unit
signal to outdoor unit
Yes
No
Yes
Yes
No
No
Open
Close
Electronic expansion valve:
overheat control. Swing flap:
cooling standard position. Fan
motor: rated speed
(3) Cooling operation
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