Using Microprocessor - Munters DRYCOOL RENTAL HCUb Series Manual

13 Compressor A High Pressure Fault
14 Compressor A Low Suction Pressure Fault
15 Compressor A Low Suction Lockout (cycle power to reset)
16 Compressor A Low Pressure Sensor Failure
17 Compressor B High Pressure Lockout (cycle power to reset)
18 Compressor B High Pressure Fault
19 Compressor B Low Suction Pressure Fault
20 Compressor B Low Suction Lockout (cycle power to reset)
21 Compressor B Low Pressure Sensor Failure

4.5. Using Microprocessor

Microprocessor has a keypad and display to allow operator to view status of various functions and set
parameters. Keypad and display are located on microprocessor inside control panel. NOTE: Modification of set
points without consulting factory could void warranty.
4.5.1. Navigation of Microprocessor
Refer to Section 2 for detail information.
Table 2: Operational Alarms Description
There is high voltage inside control panel. Do not touch anything but
keypad on display. Failure to heed this precaution may cause injury to
personnel and/or damage to equipment.
Verify head pressure and condensing fan operation
Verify suction pressure and DX coil temperature
Cycle main power to reset lockout.
Check sensor power and connections
Cycle main power to reset lockout.
Verify head pressure and condensing fan operation
Verify suction pressure and DX coil temperature
Cycle main power to reset lockout.
Check sensor power and connections