Riello 20153499, Инструкции по установке и техническому обслуживанию

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COMMISSIONING AND MAINtENANCE
— check that the condensate discharge pipe is clean
9
Do not use any means to accelerate the defrosting.
9
Do not use systems different from the ones indicated in this
manual.
9
Emptying of the evaporator
This operation may be necessary to perform reparations on the
low pressure side (evaporator), the device reallocation or the re-
placement of the indoor unit without losing the whole refrige-
rant charge.
Proceed as follows:
— remove the covering plug from the shut-off valve
— check that the three-way shut-off valve is fully open
— let the device operate in cooling mode for 10 - 15 minutes
— stop the device for about 3 minutes
—
connect the charging tube of the pressure gauge unit to
the three-way valve service connection on gas side
— vent the air from the charging tube
— close the two-way shut-off valve on liquid side
— operate the equipment in cooling mode until pressure
gauge reads a suction pressure of approx. -1 MPa
— close the three-way shut-off valve on gas side
—
stop the unit
— disconnect the pressure gauge unit
— refit the valve covering plug
9
Carefully check for absence of leakages from the closing
point of the plug.
9
3.4 Operation signal and alarms
Model 1070
Signals are displayed by means of LEDs on the unit main electro-
nic board.
Proceed as follows to access the filters:
1 Upper panel
2 Electric panel cover
1
2
— unscrew the fastening screws
—
remove the top panel
— unscrew the fastening screws
— remove the electric panel cover
Faults are signalled by means of LED 1 blinking.
led 1 Description Remarks
1 External unit microprocessor fault The unit resets after problem resolution
2 Power module fault After 3 consecutive interventions in 10 minutes, the unit resets after problem resolution
3 Main electronic board protection against overcurrent After 3 consecutive interventions in 30 minutes, the unit resets after problem resolution
5 High pressure protection The unit resets after problem resolution
6 Wrong power supply voltage The unit resets after problem resolution
8 Overheat protection for compressor discharge
The unit resets automatically when the temperature drops under 110°C
After 3 consecutive interventions in 30 minutes, the unit resets after problem resolution
9 Fan motor malfunction After 3 consecutive interventions in 30 minutes, the unit resets after problem resolution
10 Defrost temperature sensor failure The unit resets after problem resolution
11 Suction probe fault or suction overtemperature The unit resets automatically when the temperature drops under 40°C or after problem resolution
12 External air probe fault The unit resets after problem resolution
13 Discharge temperature sensor failure
The alarm activates 4 minutes after the unit start
After 3 consecutive interventions in 30 minutes, the unit resets after problem resolution