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APPENDIX 1 - TROUBLESHOOTING FLOWCHART - CONT.
1 - Chiller does not run.
Blower motor
runs (16DJ).
Gas control valve
moves.
Motor moves to fully
open, but then does not
move any more.
Motor moves to fully
closed, but then does
not move any more.
Check E2 of the solution level electrode.
Check setting of air flow switch.
Check if the air flow switch is ON.
The motor is defective.
Check E1 of the solution level electrode.
Protection relay is defective.
Check E3 of the solution level electrode.
Check setting of air flow switch.
Check if the air flow switch is ON.
The motor is defective.
Check E1 of the solution level electrode.
Protection relay is defective.
Gas control valve
does not move.
Oil solenoid
valve does not
open.
Protection relay is defective.
Check E1, E2 and E3 of the solution level electrodes.
The motor is defective.
Protection relay is defective.
The solenoid valve is defective.
Check if the air flow switch is ON.
Check setting of air flow switch.
Blower motor
does not run
(16DJ).
Interlock
Fuse has blown.
Check if chilled-water pump interlock signal goes to the microprocessor.
Check if cooling water pump interlock signal goes to the microprocessor.
Check if fan interlock signal goes to the microprocessor (16DJ).
Check breaker on the burner control panel.
If solution level alarm exists at start-up, the blower does not run.
Check if the motor is in fully closed position.
The motor may stop in the half-way position after a power failure.
Air flow contact is welded.
Protection relay is defective.
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