2. Charging procedures – Three phase compressors
The fundamental procedure is the same as for single phase models but the compressor can run in the
wrong direction on starting. If this happens reverse any two phases and start again. Short term reverse
rotation will not damage the compressor.
All Specter compressors have internal discharge temperature protectors which are very effective in
preventing dangerously high discharge temperatures during charging. The protection module will trip
and lock the compressor out for 30 minutes. It is not normally necessary to wait 30 minutes for the
module to reset. When the compressor has cooled down the module can be reset by breaking the power
supply to the control circuit. Very often the serviceman does not understand why the module tripped and
uses a jumper wire to bypass it. He continues to charge the system and removes the jumper when
charging is complete. The compressor may or may not run with the protector back in the circuit but it is
certain that the compressor has been damaged and premature failure is inevitable.
Event Error code
trohS ro nepO rosneS mooR1
nepO rosneS lioC roodnI2
nepO rosneS lioC roodtuO3
4 Compressor Overload / Indoor Coil Sensor Short / Outdoor Coil Sensor Short
5 Gas leak Blink E5
Blink E6
Blink E8
tluaf pmup retaW6
)trohs nip hctiws tcat( rorre erawdraH7
Indicator Lights
Fault Diagnosis
Blink E1
Blink E2
Blink E3
Blink E4
Overall Checking
• Ensure that:
1) The unit has been mounted solidly and rigid
in position.
2) The piping and connections are leak-proof
after the charging.
3) Proper wiring has been installed.
• Drainage check
– pour some water into the left side of the drain
pan (the drainage is at the right side of the
unit).
• Test run:
1) Conduct a test run on the unit after having
perform the water drainage test and the gas
leakage test.
2) Check the following items:
a) Is the electrical plug inserted firmly into
the socket?
b) Is there any abnormal sounds from the
unit?
c) Is there any abnormal vibrations on the
unit or the piping?
d) Is the drainage of water smooth?
• Confirm that:
1) The condenser fan is running. Check the
warm air blowing from the condensing unit.
2) The evaporator blower is running and
discharge cool air.
3) The suction (low side) pressure is as
recommended.
4) The remote controller incorporates a
3-minute delay protection in the circuit,
whereby the outdoor condensing unit
requires about 3 minutes delay before it can
start operating.
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