nVent Hoffman S060316G031, Инструкция по эксплуатации

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3-PHASE 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 60.
» 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
lower right “����e” button for greater than � 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 there ����
YES, proceed to step 5.
NO, possible problem:
» Controller in alarm condition. See ALARM
CONDITION DISPLAY on page 60.
» Open motor winding
» Stuck fan/impeller
» Obstructed blades/wheel
» Defective motor capacitor
Repair or Replace
defective part
5. Check phase monitor indicator light, is it Illuminated?
YES, proceed to step 6.
NO, possible problem:
» Incorrect electrical phasing
De-energize unit and swap any two power
leads to unit. If problem still persists, replace
phase monitor. Refer to phase monitor section
of this manual for additional information.
6. Start the cooling cycle by changing the cooling setpoint parameter (r01) to the low limit of 72 F (22
C). Symbol 1 should be displayed indicating a call for cooling. If symbol 1 is ����� 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
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