nVent Hoffman S060316G031, Инструкция по эксплуатации

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BASIC AIR CONDITIONING TROUBLE SHOOTING CHECK LIST - REMOTE
ACCESS CONTROL VERSION
1. Check manufacturer’s nameplate located on the unit for correct power supply.
2. Turn on power to the unit. The controller will display a start up sequence then revert to the normal
temperature display mode. Is the correct enclosure temperature displayed?
Note: The temperature may be alternating with an alarm code.
YES, proceed to step 3.
NO, possible problem:
» Open controller fuse
» Controller in alarm condition. See Alarm
Condition Display on page 18.
» Defective controller
» Defective thermistor - check by blowing
warm air across the thermistor. If display
temperature rises, thermistor is operable.
Replace part
3. The cooling status indication (symbol G) should be on. Is the symbol on? If not, press and hold the
���������� e button for gr������� e seconds. Is the cooling mode symbol now on?
YES, proceed to step 4.
NO, possible problem:
» Defective controller
Replace part
4. The evaporator (Enclosure or COLD air) fan/impeller should turn on. Is ther�����
YES, proceed to step 5.
NO, possible problem:
» Controller in alarm condition. See Alarm
Condition Display on page 18.
» Open motor winding
» Stuck fan/impeller
» Obstructed blades/wheel
» Defective motor capacitor
Repair or Replace
defective part
5. Start the cooling cycle by changing the cooling setpoint parameter (r01) to the low limit of 20°C.
Symbol 1 should be displayed indicating a call for cooling. If symbol 1 ������= the unit is in
Restart Time Delay mode. Within 6 minutes, symbol 1 should display without ����� Is symbol 1
display����������
YES, proceed to step 7.
NO, possible problem:
» Unit still in Recycle Time Delay mode
» Enclosure temperature below cooling
setpoint temperature
Wait and/or heat
enclosure thermistor T1
6. The compressor and the condenser (Ambient or HOT air) impeller(s) should turn on. Is there
adequate ����
YES, proceed to step 8.
NO, possible problem:
» Open motor winding(s)
» Stuck impeller(s)
» Obstructed wheel(s)
» Defective motor capacitor(s)
Repair or Replace
defective part
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