Philips EP 5400 Series - Level 2: Pump and Flowmeter Testing


Sequence of
actions by user
Reaction of the appliance
PASS FAIL Cause of failure Solution
Pump and Flowmeter
Press and release
K to switch on
the Pump (
impulses). With
the EV open
the water goes
out from the
HotWater spout.
With the EV
closed and the
BU in Work,
the water goes
out from the
Coeespout.
• L White ON in UI panel +
• BoxK White in Display +
BoxT Green in Display +
BoxT Green in Display
• It’s possible to hear the pump.
• BoxT will count impulses
BoxK OFF + BoxT
Red.
It’s possible to hear
the pump but the
owmeter is not
able to detect the
impules.
Wiring of the
Flowmeter not
connected
Check the wiring
Wiring of the
Flowmeter damaged
(open)
Change the wiring
Flowmeter damaged
Change the
Flowmeter
Connector JP in
Main damaged (short
circuit)
Change Main
Board
uP U in Main
damaged (short circuit
in Pin)
Change Main
Board
BoxK OFF +
BoxT Red.It’s NOT
Wiring of the PUMP
not connected
Change Main
Board
Wiring of the PUMP
damaged (open)
Change the PUMP
PUMP damaged Change the PUMP
The drive of the
Pump in the Main is
damaged
Change Main
Board
ThermoBlock and NTC
Press and release
K to toggle the
ThermoBlock.
Check the
absorbed
current. In this
case we suppose
that was OFF,
then will be ON
%.
• L White ON in UI panel +
• BoxK White in Display +
BoxT Green in Display +
BoxT Green in Display
• The Thermoblock is ON.
• Check the absorbed current.
• BoxT will show the
temperature
BoxK OFF + BoxT
Red.
The NTC is open
BoxK OFF + BoxT
Red.
The NTC is short
Wiring of the NTC not
connected
Check the wiring
Wiring of the NTC
damaged (open)
Change the wiring
NTC damaged (short) Change the wiring
Connector JP in
Main damaged (short
circuit)
Change Main
Board
uP U in Main
damaged (short circuit
in Pin)
Change Main
Board
Test mode