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Other Malfunctions and Solutions (No display on LED wire controller)
Malfunctions
Observation
Reasons
Solution
Heat pump is
not running
LED wire controller shows
nothing
No power supply
Check whether cable and circuit
breaker are connected
LED wire controller
displays the actual time
Heat pump under standby
status
Startup heat pump to run.
LED wire controller
displays the actual
water temperature
1. Water temperature is
reaching set value, heat
pump
under
constant
temperature status
2. Heat pump just starts to
run
3. Under defrosting
1. Verify water temperature
setting
2. Startup heat pump after a few
minutes
3. LED wire controller should
display "Defrosting"
288
IPM over-temperature
protection
Fan motor failure, air duct blocked
Check fan motor and air
duct
320
High compressor
peak current
1.Compressor current is too high.
2.The driver program doesn’t match
with compressor
Replace inverter module
384
PFC module
over-temperature
Temperature of PFC Module is too
high
Содержание NE-F50SP/R4INV-PA
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