Carrier VECTOR 6500, Руководство по эксплуатации и обслуживанию

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Alarm
NO.
Steps Alarm/Cause Corrective Action
93 CHECK START UP BUZZER
•
TRIGGER–ON: The Buzzer (B) circuit is shorted. (The Buzzer output from the microprocessor
[5MP08] is negative, so the circuit will not be shorted to ground, but is shorted either within the
Buzzer itself, or to a positive wire.)
•
UNIT CONTROL: Engine and Standby Operation: alarm only.
•
RESET CONDITION: Auto Reset when Buzzer amp draw is normal, or alarm may be manually
reset via keypad or by turning the unit off, then back on again.
NOTE: Follow the steps below until a problem is found. Once a repair or correction has been made, the active
alarm should clear itself (see reset condition above). Operate the unit through the appropriate modes to see if
any active alarm occurs. Continue with the steps below as necessary.
1 Check Buzzer
a. Inspect Buzzer & wire
connections.
No damage to buzzer.
No damage or corrosion.
b. Check resistance of buzzer. Refer to Section 2.12 for correct electrical values.
Cannot be opened (infinite ohms), shorted (Zero
Ohms) or shorted to ground.
2 Check Buzzer Wiring
Inspect harness & control box con-
nector pins & terminals. (See wiring
schematic Section 10.)
No physical damage to harness.
No damage, moisture, or corrosion in connectors.
3 Check Buzzer Current Draw
Use Component Test Mode to test
actual current draw of the circuit.
(Refer to Section 5.2.2.)
Refer to Section 2.12 for correct electrical values.
View current draw in Data List.
94 CHECK COMP CONTACTOR 1
•
TRIGGER–ON: Compressor motor contactor relay (CCONR) circuit is shorted. (The relay output
from the microprocessor (4MP5) is negative, so the circuit will not be shorted to ground, but is
shorted either within the relay coil itself, or to a positive wire.).
•
UNIT CONTROL: Engine and Standby Operation: alarm only.
•
RESET CONDITION: Auto Reset or alarm may be manually reset via keypad or by turning the unit
off, then back on again.
NOTE: Follow the steps below until a problem is found. Once a repair or correction has been made, the active
alarm should clear itself (see reset condition above). Operate the unit through the appropriate modes to see if
any active alarm occurs. Continue with the steps below as necessary.
1 Check CCONR
a. Inspect compressor contactor
relay coil and terminals.
No damage to coil.
No damage or corrosion.
b. Check contactor coil resistance. Refer to Section 2.12 for correct electrical values.
Cannot be opened (infinite ohms), shorted (Zero
Ohms) or shorted to ground.
c. Check amp draw of coil. Refer to Section 2.12 for correct electrical values.
Use ammeter.
2 Check CCONR Wiring
Inspect harness & control box con-
nector pins & terminals. (See wiring
schematic Section 10.)
No physical damage to harness.
No damage, moisture, or corrosion in connectors.
3 Check CCONR Current Draw
Use Component Test Mode to test
actual current draw of the circuit.
(Refer to Section 5.2.2.)
Refer to Section 2.12 for correct electrical values.
View current draw in Data List.