Dacor CM24P-1 Průvodce řešením problémů stáhnout pdf (Strana 28)

Service Test 17 – Compressor Minimum Speed

The compressor should have been off for at least five minutes prior to this test. If the off time is not five minutes, the short cycle

protection within the compressor controller will prevent operation until enough time has elapsed. The Service Test may time out

(three minutes) before sufficient time has elapsed for the compressor to start. If the display changes back to this display (17 00)

reactivate the test. Pressing the Power Interrupt Button will start the compressor at minimum speed. The display will show the

current evaporator temperature on the fresh food side of the display.

If the compressor is working, this temperature should quickly drop. If the compressor does not eventually start after waiting for at

least five minutes check for the following conditions: JP10, pins 1 to 2, 2-2.5VAC this is the drive signal from the Main Control

Board to the Compressor Controller. CN 05 pins 1 to 6, 130VAC, this is the output from the compressor controller to the

compressor.

Service Test 18 – Fresh Food Fan Speed

This Service Test will verify the feedback signal from the fresh food fan to the Main Control board. Pressing the Power Interrupt

Button will report the fan speed in revolutions per second. This reading would be 39 RPS.

Service Test 19 – Freezer Fan Speed

This Service Test will verify the feedback signal from the freezer fan to the Main Control board. Pressing the Power Interrupt

Button will report the fan speed in revolutions per second.

Service Test 20 – Fresh Food Thermistor Value

This test will provide the current reading for the fresh food thermistor. This reading is real time and should be very close to the

actual temperature of the fresh food thermistor. If the reading is drastically different than the reading from a known good and

calibrated digital thermometer, consider replacement of the thermistor. Consider any reading within 5 degrees of a known good

calibrated thermocouple acceptable.

Service Test 21 – Freezer Thermistor Value

This test will provide the current reading for the freezer thermistor. This reading is real time and should be very close to the actual

temperature of the freezer thermistor. If the reading is drastically different than the reading from a known good and calibrated

digital thermometer, consider replacement of the thermistor.

Service Test 22 – Ambient Thermistor Value

This test will provide the current reading for the ambient thermistor. This reading is real time and does not involve the temperature

control algorithm. This reading should be very close to the actual temperature of the ambient thermistor. If the reading is

drastically different than the reading from a known good and calibrated digital thermometer, consider replacement of the

thermistor.

Service Test 23 – Evaporator Thermistor Value

This test will provide the current reading for the evaporator thermistor. This reading is real time and does not involve the

temperature control algorithm. This reading should be very close to the actual temperature of the evaporator. If the reading is

drastically different than the reading from a known good and calibrated digital thermometer, consider replacement of the

thermistor.

Service Test 24 – Display Temperature Select

This test reports the temperature selection switch as read by the board. Pressing the Power Interrupt Button will display the

current setting. ˚F = Fahrenheit or ˚C = Celsius.

Service Test 25 – Fountain State

This test reports back the current status of the dispenser. If the dispenser control does not change the output, suspect data

communication problems with the dispenser control itself. Pressing the Power Interrupt Button will indicate the current state of the

dispenser.

Ld = Dispenser is Locked; ho = Dispenser set for Water; CS = Dispenser set for Crushed Ice; CU = Dispenser set for Cubed Ice.

Service Test 26 – Bypass Valve Switch

This test indicates the current state of the bypass switch. This switch must be reported as actuated for any of the water valves to

operate. Pressing the Power Interrupt Button will display the current switch state.

in = Bypass plug is installed; OU = Bypass plug is not installed

Service Test 27 – Filter Valve Switch

This test indicates the current state of the filter switch. This switch must be reported as actuated for the filter monitor to operate.

Pressing the Power Interrupt Button will display the current switch state.

in = Filter is installed; OU = Filter is not installed

Continued… Dacor 42” and 48” Built-in Refrigerator Diagnostics (First Generation - Classic):

Models: EF42BDCBSS, EF42BNDBSS, IF42BNDBOL, IF42BDCBOL, EF48BDCBSS, EF48BNDBSS, IF48BNDBOL, IF48BDCBOL

PG: 28

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