Mitsubishi Electric e Series Service Handbook page 101

[ VII Control ]
Startup sequence rotation
-2- Initial control
When the power is turned on, the initial processing of the microcomputer is given top priority.
During the initial processing, processing of the operation signal is suspended and is resumed after the initial processing is
completed.
(Initial processing involves data processing by the microcomputer and initial setup of the LEV opening. This process takes up
to one minute.)
During the initial processing "
During the initial processing "
Initial Control
-3- Compressor frequency
The upper limit of frequency is fixed at 20 Hz for 60 seconds after startup, and is 50 Hz or below for 180 seconds thereafter.
For 180 seconds after the startup, the compressor will be controlled every 15 seconds so that the frequency fluctuation will
be kept within ± 20% of the current frequency.
The amount of frequency change is controlled to approximate the target value that are determined based on the temperature
difference between the current and the preset water temperatures.
The minimum operating frequency is 20 Hz.
HWE20010
" will appear on the LED monitor on the MAIN board of the MAIN circuit.
" will appear on the LED monitor on the MAIN board of the SUB circuit.
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GB