51EGW05-SWHPEG-20140724
TM
TM
ECC III SERVICE TROUBLESHOOTING
TROUBLESHOOTING OVERVIEW
When properly installed according to the instructions in this manual, the PoolPak™ ECC III control system will perform as
designed and will provide a pool environment that is both comfortable and cost effective. However, in the unlikely event that
the system does not function properly, the ECC III has many features that will help a service technician resolve the issue.
The PoolPak™ has numerous safety devices designed to protect the system from failures. The compressor(s) will be shut
down when any of the following occur:
• High Refrigerant Pressure
• Low Refrigerant Pressure
• High Compressor Motor Temperature
• Low Compressor Oil Pressure
• Fan Motors Not Operating
• Compressor Motor Overload
• Space Temperature Out of Range
Additionally, the compressor and/or fan motors will be shut down when a re control system alerts the ECC III that a re
trip or smoke purge mode of operation is required.
Whenever a fault condition occurs, the alarm button on the RIU and CM1 will glow red and the displays will show the
fault condition and a recommended course of action. After 10 compressor-related faults occur, the affected compressor
system will be locked out for protection. Repetitive faults can cause compressor motor failure. When a compressor fault
condition exists, it must be diagnosed and corrected before resetting the system.
After a fault has been eliminated, the control panel alarm light will remain lit. However, the alarm will no longer be
shown in the normal status screen rotation. Pressing the alarm key will show any faults that have occurred since the
alarm light was reset.
ALARM RESET
To reset the alarm light, press and hold key VI and then press the ALARM button. If there are currently no active 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 RIU and CM1. To reset the alarm light using the keypad on CM1, press ALARM and ESC at the same
time.
The following fault conditions are detected by the ECC III control system:
Supply Fan Not Running
The controller has detected that the supply fan motor is not running even though the digital output for the contactor is
energized. This condition is detected by the current transducer for the supply fan motor. The most likely cause is a motor
overload condition that caused the motor protector to trip or a damper feedback issue.
Return Fan Not Running (SR only)
The controller has detected that the return fan motor is not running even though the digital output for the contactor is
energized. This condition is detected by the current transducer for the return fan motor. The most likely cause is a motor
overload condition that caused the motor protector to trip or a damper feedback issue.
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