NDE Pool MASTER PLUS NDE-08-DCP - Page 23

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Er 33
Outdoor coil too high temperature
protection
Keep the ambient temperature within the normal
operating ambient temperature range of the
machine
Er 35
Compressor current protection
1. Check if the incoming voltage supply is too low, if
so, repair.
2. Check if the compressor is overloaded and repair.
3. Check whether the thermal relay is damaged, if
so, replace.
Er 42
internal coil temperature failure
Check or change the sensor
◎ E20 fault will display the following error codes at the same time, the error codes will
switch every 3 seconds. Among them, error codes 1-128 are display in priority.
When error codes 1-128 don’t appear, then error codes 257-384 can show.
If two or more error codes appear at the same time, then display error codes
accumulation. For example, 16 and 32 occur at the same time, display 48.
Error Code
name
description
Solution suggestion
1
IPM Over-current
IPM Module problem
Replace inverter
module
2
compressor
synchronous
abnormal
Compressor failure
Replace compressor
4
reserved
--
--
8
compressor
output phase
absent
Compressor wiring
disconnected or poor contact
Checking compressor
input circuit
16
DC bus low
voltage
Input too low voltage, PFC
module failure,
Inspect the input
voltage, replace
module
32
DC bus high
voltage
Input voltage too high, PFC
Module failure
Replace inverter
module
64
Radiator over
temperature
Main unit fan motor failure, air
duct blockage
Inspect fan motor, air
duct
128
Radiator
temperature error
Radiator sensor short circuit or
open circuit fault
Replace inverter
module
257
communication
failure
Inverter module doesn’t receive
order from main controller
Inspection the
communication wiring=
between main
controller and inverter
module
258
AC Input phase
absent
Input phase absent (Three
phase module is effective)
Inspection input circuit