Whirlpool 290L Service-Handbuch - Seite 12

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Cooling control:

Adaptive Defrost Control

The defrost cycle shall be started after the Defrost timer has expired. According to the following defrost procedure:

Defrost must be executed every time one of the following event occurs:

1. After 8 hours (+/-10 minutes) of compressor running, calculated considering just the thermostat function.

2. When the product goes into defrost (in thermostatic mode) a time period of 20 min (+/-1 minute) is allowed

to complete the time to defrost.

3. If the door open time > 10 min, within first 5 hrs of cumulative compressor run time, defrost is initiated at

5hrs.

4. If the door open time < 10 min or If there is at least one door opening up to 8 hrs of compressor running then

defrost time is as per point 1.

5. If there is no door opening up to 8 hrs of compressor running than defrost time will be 18hrs

6. If there is no door opening for 8 hrs, & there is door opening between 8 to 18 hrs of compressor running,

defrost will take place immediately.