Hanbell RC2-D, Техническое руководство

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RC2-D Technical Manual
43
5. Motor fail to
start or Y

△
fail to
switch
1. Full load start, the capacity-control valve does not return to its initial state.
2. Voltage too low or voltage wrong
3. Starting voltage drop too large, electromagnetic contactor cannot pull in.
4. Motor failure
5. Operation when phase shortage or reverse
6. Motor protection switch activated
7. Wrong wiring of the motor coil
8. Poor
Y

Δ
start timer
9. Restart is less than 3 minutes from the previous start
10. The current setting is too small or the improper selection of circuit breaker.
11.The connecting of
Y

△
is not secured
12. Poor electromagnetic contactor
6. Abnormal
vibration or noise
1. Bearing damage
2. Liquid compression
3. Rotor overheating due to mutual friction or friction with the casing.
4. Lubrication failure caused by oil loss
5. Internal parts loose
6. System pressure disorder
7. Resonance caused by poor piping, no flexible stretch
8.Foreign objects come into the compressor chamber
7. Discharge
temperature too
high
1.Excessive refrigerant superheat (refrigerant shortage, expansion valve
abnormal)
2.High pressure too high (bad cooling, air enters the system, cooling water
temperature too high, cooling water flow insufficient, condenser heat transfer
effect poor).
3. Compression ratio too large and no auxiliary cooling
4. Bearing damage, rotor friction.
5. Oil loss or oil level too low
8.2.3 Troubleshooting
INT69HBY Diagnose troubleshooting:
Fault Phenomenon Troubleshooting
1. Abnormal
power supply of
module
Red flash 3;
Orange flash 1 The power supply of the module is too low. The normal operating voltage of
NT69HBY Diagnos is 115v-240v (- 15% ~ + 10%)
2. The module is
not abnormal, but
the unit fail to
start
Green light on
Measure the resistance between M1& M2, if it is disconnected, replace
protectors.
3. PTC abnormal
Red flash 1;
Orange flash 1
Confirm if the temperature is too high;
If not, start the compressor after the
automatic reset delay. If manual reset is
required, confirm that the light is red
flash 1 and orange flash 3, wait for 5
minutes, then start the compressor
After high temperature
protection, the automatic reset
delay time after the temperature
drops to normal value
First: 5min
Second: 60min
Third: Manual reset
Red flash 1;
Orange flash 3
Reset delay after temp protection
Red flash 1;
Orange flash 4
Check if terminal is in poor connection
4. Abnormal
voltage
Red flash 2;
Orange flash 1 Check if the phase sequence of power is
correct
After the 3-phase voltage
protection, the problem should
be solved before manual reset
Red flash 2;
Orange flash 2
1. Measure if the unbalance rate of
3-phase voltage is less than 15%
2. check if the power is broken phase