Philips 4000 Service Manual page 32

PHILIPS 4000
Page 4 (EV - PUMP): This test directs the correct operation of the electro valve and pump:
The machine passes to the Page 4 (EV - PUMP)
Start condition
Press the Z1 button to open the Electro Valve
IMPORTANT NOTE: If the DREGDRAWER is not inserted or the DOOR is not
closed the EV test cannot be performed. If these 2 inputs are not in the right
position, a warning message will be shown and the display turns to yellow for
HD models or red for EP models.
It is possible to hear the "click" from Electro Valve. The indication beside the
EV1 changes from "OFF" to "ON". If the indication EV1 doesn't change and
remain "OFF", check the electro valve, replace it (with a one of stock) and if
doesn't change again, check the cable (disconnected?) or replace the CPU
board.
Press the Z4 button to switch on the pump
The water goes out from Pannarello (CMF), cappuccinatore (AMF) or water
spout (OTC) and the indication IMP (impulse) shows increasing numbers. The
indication L/H (liters for hour) must be within the range 10-18.
ERROR: The display backlight changes from green (HD Models) or white (EP
Models) to red and the impulse remains 0; If water comes out the pipe: check the
wiring from the flowmeter to the CPU/POWER board (JP5 Electrical diagram).
If no water comes out the pipe: check the pump and the wiring from the pump
to the CPU/POWER board (JP24 Electrical diagram).
ERROR: The L/H value is zero or <10; the Electro Valve does not open. Check
the wiring from the Electro Valve to the CPU/POWER board (JP3 Electrical
diagram) and the Electro Valve
Press Z7 " " to move to the next screen
The machine passes to the level 5 (Heater-Grinder)
04 DIAGNOSTIC MODE
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