User manual AEG-ELECTROLUX MICROMAT115E/U-M

[. . . ] If a short circuit is found, replace all parts which have been overheated or damaged by the short circuit. After servicing the unit, make an insulation resistance test to protect the customer from being exposed to shock hazards. Unplug the power cord and connect a jumper lead between the two (2) live pins. The grounding conductor (yellow/green) is to be open. [. . . ] Ltd Service manual for F Dehumidifier 2 Electronic function 2. 1 When the unit is just powered on When the unit is just powered on or the dropped power is just restored, the unit will immediately perform the self-diagnosis. The check items include the water-full, temperature sensor and humidity sensor. If there is no defect, the power indicator will flash at 0. 5Hz while all other indicators are off. All buttons are invalid except the ON/OFF button. 2. 2 Operating under setting humidity When the ON/OFF button is pressed for the first time after the unit is powered on or the power is just restored from dropping, the unit will operate with a original factory humidity 60%RH and the power indicator will light. Under this condition, the humidity can be set by pressing the Humidity Up/Down buttons. When the indoor humidity is 5% higher than the setting humidity, the compressor will be on. When the indoor humidity is lower than the setting humidity, the compressor will be off and the fan will stop operating 3 minutes after the compressor is shut down. If the indoor humidity is getting 5% higher than the setting humidity, the fan will be on immediately and the compressor will start too. 2. 3 Continuous Dehumidifying mode The compressor and the fan motor will always be on and the Continue and power indicator will be on. The LED will display the indoor humidity. Ltd Service manual for F Dehumidifier 3. 1. 3 Humidity sensor check Humidity display is chaos Water on the Humidity sensor board Dry it over heat Humidity sensor board trouble or main PCB defective Replace humidity sensor board trouble or main PCB 3. 1. 4 Fail to start or fail to start motor 3. 1. 5 Abnormal noise 5 GD Midea Refrigerant Equipment Co. Ltd Service manual for F Dehumidifier 3. 1. 6 Complaint and remedy Complaint No display on panel or any one of the button failure. Cause Transformer (Discharge transformer before testing) Display board or main PCB failure Fan motor w ill not run. No power Power supply cord Remedy Check resistance between the two input/output lines on transformer. Replace the transformer if either of the input/output is open or the transformer is damaged. Replace the display board if it is +5V else replace the main PCB. Check voltage at the power cord terminal on Main PCB. Transformer (Discharge transformer before testing) Wire disconnected or connection loose Main PCB failure Check resistance between the two input/output lines on transformer. Replace the transformer if either of the input/output is open or the transformer is damaged. Refer to wiring diagram for terminal identification. Select fan speed and Check the voltage of P1, P2 on main PCB. [. . . ] Ltd Worn bearings Service manual for F Dehumidifier Replace the motor if knocking sounds continue w hen running or loose, or the motor hums or noise appears to be internal while running. Excessive noise Compress or will not run while fan motor runs Copper tubing Remove the cabinet and carefully rearrange tubing not to contact cabinet, compress or, shroud and barrier. Voltage Wiring Check voltage. Call an electrician if not within limits. Check the w ire connections, if loose, repair or replace the terminal. If wires are of f, refer to wiring diagram for identification, and replace. [. . . ]