Thermoplan AGUILA AG220 Technical Manual page 28

Milk Component
Refrigerator does not cool
Watery milk in the container
Display message
"Milk level low, top up milk"
Display message
"Milk container empty. Top up
milk"
Display message
"Error: NTC R short-circuit"
Display message
"Error: NTC R breakage"
Display message
"Milk pump error"
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• Compressor defective.
• NTC of the refrigerator is
defective.
• Milk non-return valve
defective.
• Milk is almost empty.
• Cable break of the Milk Level
detector or the Minus detector
in the milk suction tube.
• Milk is empty.
• Cable break of the Milk Empty
detector or the Minus detector
in the milk suction tube.
• Short-circuit in the NTC circuit.
• Short-circuit in the electrical
circuit of the refrigerator.
• Interruption of the NTC circuit.
• Interruption in the electrical
circuit of the refrigerator.
• Milk pump does not reach the
required speed.
• Electrical circuit of the milk
pump interrupted or short-
circuit occurred.
• Milk pump is blocked.
Troubleshooting - Aguila - 220 - B - en
Check compressor (compressor
u
first starts 5 minutes after
switching on the machine for
reasons of safety).
Check NTC of the refrigerator
u
and replace if necessary.
Measured value: 10 kΩ at 25
°C.
Test milk non-return valve:
u
Trigger milk rinsing. Water
must not run back into the milk
container.
Top up milk.
u
Check electrical "Milk level"
u
circuit: Voltage between Milk
level detector and Minus
detector must be at 3.5 VAC.
Top up milk.
u
Check level temperature sensor
u
in the input test [INPUT TEST
10]
Check electrical "Milk empty"
u
circuit: Voltage between Milk
empty detector and Minus
detector must be at 3.5 VAC.
Check NTC of the refrigerator
u
and replace if necessary.
Measured value: 10 kΩ at 25
°C.
Check electrical circuit of the
u
refrigerator.
Check NTC of the refrigerator
u
and replace if necessary.
Measured value: 10 kΩ at 25
°C.
Check electrical circuit of the
u
refrigerator.
Check milk pump in the service
u
menu "Output test" and
replace if necessary.
Check electrical circuit.
u
Check/clean the milk system
u
Replace milk pump.
u
© Thermoplan AG
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