Service Test 1 - Defrost Thermostat & Defrost Circuit Test; Service Test 2 - Compressor/Condenser Fan Test; Service Test 3 - Evaporator/Freezer Fan Test - Fisher & Paykel RX256DT4X1 FP Service Manual

8.3.4.1 Service Test 1 – Defrost Thermostat & Defrost Circuit Test.
When selected, this test will display the state of the defrost thermostat. In order to perform this test,
the defrost heater will be energized.
• The test is activated and deactivated using the Refrigerator Temperature U p keypad
Once activated, this test must be de-activated to move to another test number.
• This test also allows observation and measurement of proper defrost function. The service
technician must observe defrost heat and voltages while the test is activated.
8.3.4.2

Service Test 2 - Compressor/Condenser Fan Test.

When selected and activated, this test will operate the compressor/condenser fan circuit. A service
technician should evaluate proper operation of the compressor and condenser fan.
• The Refrigerator Temperature Up key
"0"/"F" (ON & OFF). The test must be "deactivated" or in the OFF position to move to another
test selection.
OBSERVE COMPRESSOR & CONDENSER FAN FUNCTION
8.3.4.3

Service Test 3 - Evaporator/Freezer Fan Test.

When selected and activated, this test will operate the freezer fan.
• The Refrigerator Temperature Up keypad
(ON & OFF). The technician will have to inspect the fan for proper function. The test must be
"deactivated" or in the OFF position to move to another test selection.
DEFROST THERMOSTAT OPEN
DEFROST THERMOSTAT SHORTED (CLOSED)
OBSERVE FAN FUNCTION
will toggle the compressor drive circuit between
will toggle the fan drive circuit between "0"/"F"
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