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Saturn FIVE
TROUBLESHOOTING
Failure
Fan not operating
Insufficient air flow
Excessive vibration
The fan does not switch
off
Alarm signal
PROBLEM SOLVING (EC version only)
The following are possible actions that can be taken when a specific alarm occurs:
Code. Alarm
Solution
1
High voltage Check that the input voltage is within the range allowed by the device or that no voltage spikes occur.
Low voltage Check that the input voltage is within the range allowed by the device or that there are no voltage dips.
2
Note: The reporting of the low voltage alarm when shutting down the device is to be considered normal
Check that the ambient temperature at which the device is operating is within the proper operating
range of the equipment.
Temperature
Check that the fan meshes are clear and that the motor dissipation fins are clean so that the inverter
3
too high
can properly dissipate internal heat.
Wait for the temperature of the device to drop (below 80°C for the IGBT module and below 105°C
for the board) before requesting a new movement.
The inverter detected too high a current, so it reduced the speed and tried again at the required RPM
three times in succession. Check that the fan is free to rotate without hindrance (for safety reasons,
ensure that the fan is switched off before carrying out the checks).
Check for possible bearing problems by checking that there is no play on the fan's axis of rotation
Current too
(for safety reasons, make sure the fan is switched off before carrying out checks).
4
high (lock)
Check that the input voltage is within the correct operating range of the equipment and that the
cable cross-section in use is adequate.
Try resetting the alarm and retry the movement or turn the device off and on again after waiting at
least one minute for the internal capacitors to fully discharge.
Check with Munters that the acceleration at start-up is not too high (boost).
Loss of syn-
Try resetting the alarm and retry the movement or turn the device off and on again after waiting at
5
chronism
least one minute. Check with Munters that the minimum speed is not too low (FF to FOC) or that the
(lock)
acceleration at start-up is not too high (boost).
126
126
Reason
Fan control set above ambient tem-
perature
Blown fuse or open circuit switch
Faulty controller
Defective motor
Reverse impeller rotation direction
Drive belt slipping
Dirty guard
Loosening of fixing screws
Damaged fan
Thermostat set incorrectly
Control set for continuous operation Set control correctly
Abnormal current consumption
Solution
Set to a lower temperature
Replace fuse or reset switch
Repair or replace the controller
Repair or replace the motor
Check the rotation direction of the impeller
Tension the belt
Clean guard
Check and eliminate any interference
Check the tightness of the screws of the guards,
fixed components and moving parts
Replace the fan
Set the correct temperature
- Disconnect the power supply
- Wait 1 minute.
- Visually inspect for any external objects preventing
proper fan rotation and remove if present.
- Reconnect the power supply.
- If the alarm signal has not gone off, contact te-
chnical support.
Saturn FIVE
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