7−46
62-11389
Alarm
NO.
Steps Alarm/Cause Corrective Action
7.7 ELECTRICAL ALARMS
71 BAD F2 OR F3 FUSE
• TRIGGER–ON: One or more of the following fuse circuits have been open for more than 2
seconds: F2, F3
• UNIT CONTROL: Engine Operation: Alarm Only. If the engine shut off, see troubleshooting
steps below to correct.
Standby Operation: Additional verification required if the “NO A/C POWER”
configuration is set for “Installed and shutdown”, the refrigeration system
will shutdown with the alarm on and PSCON still energized.
• RESET CONDITION: 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, clear the
alarm(s). See Note 1 page 7−2. Operate the unit through the appropriate modes to see if any active alarm
occurs. Continue with the steps below as necessary.
1 Check Unit Operation
Did engine shutdown? Yes Check F3.
No Check F2.
2 Check Fuses
a. Locate blown fuse(s). Will have open circuit.
b. Verify fuse size. Refer to Section 2.13 for correct electrical values.
Must be correct rating for circuit. (See wiring
schematic. Section 10.)
c. Inspect fuse & fuse holder. Terminals tight; No signs of overheating, melting or
discoloration.
3 Check Circuit
a. Check amperage draw on Speed
Relay circuit.
Refer to Section 2.13 for correct electrical values.
b. Check amperage draw on Run
Relay circuit.
Refer to Section 2.13 for correct electrical values.
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