© 2017 PoolPak LLC. All rights reserved.
ComPak
®
Series - Installation, Operation and Maintenance |
65
ComPak
®
Series IOM
Troubleshooting
When properly installed according to the instructions in this manual, the ComPak® unit with a CPCS-PCP
controller will perform as designed and provide a pool environment that is both comfortable and cost effective.
However, in the unlikely event that the system does not function properly, the CPCS-PCP has many features that
will help a service technician resolve the issue.
The ComPak® unit has numerous safety devices designed to protect the system from failures. The compressor
will shut down whenever a high refrigerant pressure, low refrigerant pressure, high motor temperature (scroll
compressor models), or evaporator coil freeze-up occurs. Additionally, the compressor and fan will be shut down
whenever a fire detection system alerts the ComPak® unit that a fire trip mode of operation is required or if a fan
motor overload condition is present.
If the ComPak® compressor will not operate upon start-up or troubleshooting and there are no alarm conditions,
check to see that the actual dew point temperature is not below the dew point temperature set point. The dew
point temperature and dew point temperature set point is displayed under the detailed status screen menu. The
compressor will only run after the dew point temperature rises above the dew point temperature set point. This
is usually achieved by a rise in the air temperature. The compressor will not operate unless these dew point
conditions are satisfied. Normally a rise in the air temperature will bring the dew point above the dew point set
point. The rise in air temperature is achieved by energizing the auxiliary air heat circuit.
Whenever a fault condition occurs, the alarm button will glow red and the remote interface unit will display the
fault condition and a recommended course of action. If the fault is a high pressure, low pressure, or defrost, the
CPCS-PCP will display a three digit number representing the status of the A/C solenoid, reheat solenoid and
bypass solenoid at the time of the fault. In the table below, a 1 indicates ON and a 0 indicates OFF.
Table 5-1. Solenoid Activation
A/C SOLENOID
REHEAT SOLENOID
BYPASS SOLENOID
1
0
0
1
0
1
0
1
0
0
1
1
After 10 faults occur, the controller will lockout the compressor to prevent it from being damaged. Repeated high
pressure, low pressure, high motor temperature, or defrost trips can cause the compressor motor to fail. When
any of these conditions are present, the problem must be diagnosed and corrected immediately. Faults caused
by fire trips are not counted in the 10 fault lockout protection. If the space relative humidity is greater than the
humidity set point but the compressor is not operating, and the CPCS-PCP control panel reads that the unit is
calling for dehumidification, make sure the ComPak® has sufficient water flow. The CPCS-PCP will lock out the
compressor if the unit does not have sufficient water flow.
After a fault condition has been eliminated, the remote interface unit alarm light will remain lit. However, the
alarm will no longer be shown during normal screen rotation. Pressing the alarm key will show any faults that
have occurred since the alarm light was reset. To reset the alarm light, press and hold the Escape key and then
press the alarm key. If there are currently no fault conditions, the alarm light will go off. The alarm contact closure
output of the controller operates in conjunction with the alarm light on the remote interface unit.
The alarm history can be viewed at any time by going to “HISTORY” in the Service menu. A list of the 50 most
recent faults is kept there. See HISTORY earlier in this manual for details on reading the fault history log.
