Fisher & Paykel RX256DT4X1, Service Manual

Page: 35 / 108

321023
35
8.1.2 Forced Defrost Mode
A manual method to force defrosts for use in testing is provided. This mode can be used to force an
immediate defrost followed by either a short period (8 –12 hours) or a long period (> 72 hours) of
compressor cycle time to the next defrost.
Entering Forced Defrost Mode:
•
Press and hold the Door Alarm keypad.
•
Within 1 second, press and hold the Refrigerator Temperature Down keypad .
•
Release the Door Alarm keypad. The freezer display will show “Fd”.
•
Press the Refrigerator Temperature Down keypad once to confirm entry.
•
Press the Refrigerator Temperature Up keypad to select “Sh” for
short term,
or “Lo” for
long term.
•
Press the Refrigerator Temperature Down keypad to confirm. The display will flash
and begin defrost.
•
Trip the light switch or press any keypad on the keypad to return to temperature display.
8.1.3 Service Test Mode
There are several test modes available through the diagnostic system. Use of these test modes can greatly
decrease the time needed for troubleshooting. It is to the technician’s advantage to be able to perform many
tests in a very short period of time.
Entering Service Test Mode.
The service test functions are performed using the refrigerator display and keypads. Enter the Service Test
mode by performing the following sequence of events:
•
Hold the Door Alarm keypad.
•
Hold the Refrigerator Temperature Up keypad .
•
Release the Door Alarm keypad.
•
The freezer display will show “SE”, allowing the technician to confirm entry into the service mode.