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Technical Information
Remedy:
1. Remove the water tank.
2. Push the pressure pump (mat. no. 07994080) together and fill it with
water. See Figure 001-19.
3. Insert the full pressure pump into the water tank receptacle.
4. Activate the water pump in service mode (see Section 001-4.4) and use it
to push water through the system.
Cause:
Wiring short-circuited or hoses clogged or kinked.
Remedy:
1. Check wiring and hoses.
Warning!
In order to avoid possible water system faults (e.g., clogging or blocking of
valves), grease, oil or other slip lubricants should never be used when
assembling and installing water system parts.
2. Replace wiring or hoses, if necessary.
Cause:
Water tank valve jammed or clogged.
Remedy:
1. Check the water tank valve.
2. Replace the water tank, if necessary.
Cause:
Flow meter jammed or defective.
Remedy:
Replace the flow meter; see Section 001-4.16.
Cause:
Water pump defective.
Remedy:
Replace the water pump; see Section 001-4.15.
3.5
F28 - Too Much Ground Coffee in Brew Unit
Symptom:
When preparing beverages using ground coffee, the brew unit is not moving into the
"Press" position; see Section 001-2.3.5. It can, however, move back to the reference
position.
Cause:
Too much ground coffee has been deposited via the chute.
Remedy:
1. Remove the ground coffee.
2. Advise the customer about correct measuring; see the operating
instructions.
3.6
F38 - Display/Control Electronic EPB (N1-2) and Power Electronic EPL
(1N1-1, 2N1-1) Not Compatible
24
CM6
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