Munters AT14F, Instruction Manual

Page: 15 / 18

15 © Munters Corporation, July 2020
QM1050r9
Troubleshooting
7.
7.1 Troubleshooting
WARNING
!
High Voltage, disconnect
power before servicing.
WARNING
!
Moving parts, disconnect
power before servicing.
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1. Fan control set above room
temperature
2. Blown fuse or open circuit breaker
3. Propeller blade contacting fan housing
4. Fan control defective
5. Motor defective
1. Variable speed control improperly
adjusted
2. Shutter jammed or dirty
3. Guard dirty
1. Propeller blade contacting fan housing
2. Motor bearing or shaft bearing defective
3. Frequency drive improperly adjusted
1. Motor loose on mount
2. Propeller damaged
3. Motor shaft bent
1. Set to a lower temperature
2. Replace fuse or reset breaker
3. Realign motor in fan housing
4. Repair or replace control
5. Repair or replace motor
1. See Operation, Step 2 for adjustment guidelines
2. Unjam and clean shutter
3. Clean guard
1. Sand fan housing to remove high spot
2. Repair or replace motor or shaft bearings
3. See operation, Step 2 for adjustments guidelines
1. Tighten fasteners
2. Replace propeller
3. Repair or replace motor
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1. Override thermostat set incorrectly
2. Control set for continuous operation 1. Set to the correct temperature
2. Set speed control correctly