HD3610/50
7-12
Problem
Cause
Repair solution
1
Appliance doesn’t work
1. Power supply failed.
2. Keg present switch failed.
1. Check voltage output 10 V ± 0.5 V.
(replace power supply)
2. Check/replace micro switch.
2
Blinking RED LED
Red
LED blinking 1 Hz
Yellow
LED OFF
Green
LED OFF
LED indication
no tap unit / air leakage
Software detection:
When the system detects no pressure rise during
running of the pump or detects a abnormal
pressure fall (duration of the measurement takes
300 seconds), the software will interpret that
there is no tap unit placed or there is air leakage
in the system.
Checks:
1. Place tap unit.
2. Is the pressure sensor function correctly?
3. Is air leakage noticeable in the system?
3
Blinking RED LED
or pump is “to” often
activated.
(Air Leakage)
Check if air leakage is found internal the appliance.
1.
Remove
the Keg and tap unit.
2.
Block
the air Inlet coupling at the Keg side.
3.
Actuate
the KEG present switch after
±10 seconds the pump will start running
shortly (depending on air leakage).
4.
Wait
± 300 sec.
5. Check if the pump is not running the air
leakage is probable external.
If the leakage is caused internally the following
parts must be checked.
1. Leakage hose and/or hose connections.
(Hairline cracks)
2. Leakage in air coupling.
3. Leakage in the pump and/or connections.
4. Defective air pressure sensor.
Air leakage external:
Parts that could cause the external air leakage
are: Tap unit, keg and air coupling.
1. Leakage in connection air coupling - Tap
unit.
2. Leakage in connection Keg - Tap unit.
3. Leakage in the Keg.
4
Red
LED ON
Yellow
LED OFF
Green
LED OFF
LED indication
no keg /standby.
Software detection:
The KEG present/activation switch will give
input to the Interface board.
Checks:
1. Is the micro switch function correctly?
5
Cooling problems
Cool down process takes very long.
Check if the user conditions were carried out
according the DFU.
1. Check if there is 10 cm free space around the
appliance.
2. Check if the ambient temperature did not
exceed 32 °C.
3. Check if the fan is turning well and there is
no blockage caused by dust or other particles.
4. Check if the Fan is correct placed (air fl ow
direction)
Unit doesn’t cool down.
Possible root causes:
1. Peltier element became defect.
2. NTC sensor became polluted or defective.
3. Fan, heat sink is full of dust.
4. Fan became defect.
Check/replace the defective parts.
1. Perform the cooling test as described on
page 6.
2. Clean the NTC
See chapter SERVICE
TESTROUTINES step mode 2
how to
check the NTC system.
3. Check if the fan is turning well and there is
no blockage caused by dust or other particles.
4. Exchange fan.
TROUBLE SHOOTING
