Wellness NE100 User And Service Manual page 14

Communication is
257
abnormal
AC phase loss or CT is
258
disconnected
AC over-current or
260
compressor overpower
288 IPM over heat protection
Compressor current
320
protection
PFC module over heat
384
protection
12 September 2023/ DH
1. Check whether the communication cable is improperly connected
2. Check whether the baud rate and communication address code are
set according to the communication protocol
3. Replace the driving board for testing
1. The current transformer on the driving board is damaged during
transportation
2. Check whether the current transformer is improperly inserted during
production
3. The AC current at the frequency above 40Hz is very small, resulting in
abnormal detection of the current transformer
1. AC overcurrent (currently available for external models with a
separate filter board), the load is suddenly too large to reduce the
frequency
2. Compressor overpower (combined plate, three-phase 380V, no single
filter plate model) the load is suddenly too large to reduce the frequency
too late
3. Compressor overpower (combined plate, three-phase 380V, models
without separate filter plate) The compressor starts too high and low
pressure difference
1. The heat dissipation is poor. The condensing fan rotates at a low
speed or stops unexpectedly
2. The ambient Temp. rises too fast, leading to too late reaction of
over-Temp. frequency reduction
1. The compressor is temporarily overloaded (for example, liquid
compression)
2. The program does not match the compressor
3. The U, V, and W lines of the compressor are inversely connected, and
the compressor reverses
4. Compressor wear (lack of oil, liquid compression lead to wear cylinder
block)
1. The heat dissipation is poor. The condensing fan rotates at a low
speed or stops unexpectedly
2. The loop Temp. rises too fast, leading to too late reaction of
over-Temp. frequency reduction
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