Diagnosis: Troubleshooting, Warnings and Alarm Codes
230
11
Heater Current Too Low
• Occurs during pretrip (PTI) or function test only.
• Heater power consumption is 25% below expected
current draw or phase current level differs 33% or
more.
• If both alarm #10 and #11 is active this indicates too
high phase difference.
• Expected heater current is a function of the heating
element resistance and the power supply voltage.
• The may be equipped with extended
heating capability.
• Normal heating element 4kw@460VAC
-
below approximately 3,7Amp / 3,2Amp.
• Extended heating element 6kw@460VAC
-
below approximately 5,6Amp / 4,8Amp.
• Indicates:
• Incorrect heaters or heater connections.
• Defective heating element.
• Defective volt or amp meter on power module.
• Enter Manual Function Test and turn heaters
on. Check current draw on each phase.
Evaluate current draw in relation to expected
values.
• Enter configuration menu and check the
heating element setting.
• Check heater resistance.
• The electrical resistance towards chassis must
be above meg ohm (M
Ω
) range.
• Normal heating element 4kw@460VAC
-
expects 5,0Amp@460VAC
-
expects 4,3Amp@400VAC
-
expected resistance 99
Ω
on each leg.
• Extended heating element 6kw@460VAC
-
expects 7,5Amp@460VAC
-
expects 6,5Amp@400VAC
-
expected resistance 66
Ω
on each leg.
12
Evaporator Fan High Speed Current Too High
• Occurs during pretrip (PTI) or function test only.
• Fan power consumption is 33% above expected
current draw or phase current level differs 33% or
more.
• If both alarm #12 and #13 is active this indicates
too high phase difference.
• Expected fan current is a function of the power line
frequency and the supply voltage.
• With 20’ setting above approximately
-
3,4Amp@400VAC/50Hz
-
4,2Amp@460VAC/60Hz
• With 40’ setting above approximately
-
2,7Amp@400VAC/50Hz
-
3,4Amp@460VAC/60Hz
• Indicates:
• Defective or stuck evaporator fan motor.
• Incorrect motor or motor connections.
• Defective volt or amp meter on power module.
• Open evaporator door and make sure all fans
rotate freely.
• Enter Manual Function Test and start
evaporator fans on high speed. Make sure all
fans start on high speed. Check fan motor
volts and amps.
• With 20’ setting expect
-
2,4Amp@400VAC/50Hz
-
3,1Amp@460VAC/60Hz
• With 40’ setting expect
-
1,8Amp@400VAC/50Hz
-
2,4Amp@460VAC/60Hz
Alarm Codes, Descriptions and Corrective Actions (Continued)
Code
Description
Corrective Action
Summary of Contents for 098203
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Page 3: ...MAGNUM TK 60275 4 MM Rev 3 08 15 Copyright 2012 Ingersoll Rand EMEIA Printed in Ireland...
Page 193: ...Refrigeration Maintenance 191 Figure 163 Filter Drier...
Page 200: ...Refrigeration Maintenance 198 Figure 169 Receiver Tank Figure 170 Water Cooled Condenser Tank...
Page 257: ...255 Schematic Diagram RELEASED 19 Sep 2013...
Page 258: ...256 Wiring Diagram Page 1 of 2 RELEASED 19 Sep 2013...
Page 259: ...257 Wiring Diagram Page 2 of 2 RELEASED 19 Sep 2013...
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