Hydromatic II Chiller Operation Manual
Table Of Contents
- Introduction
- Getting Started
- System Overview
- Operational Overview
- Initial Configuration
- System Menu Items
- Operation
- Fault Handling
- Wiring Diagrams
- Specifications
- Glossary
- Appendix 1: System menu overview
- Appendix 2: Organizing IDs in the CAN system
- Appendix 3: Ordering a system
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Rev 1.07 ©2015 Micro Air Corp 10/26/2015
Fault Handling
When a slave detects a fault, the slave will turn off the compressor or heater if they are
operating. If the fault has been corrected, the master will attempt to restart the slave after
two minutes if required. Multiple recurring faults will cause the slave to be locked out by
the master.
Fault Indication
The fault will be indicated at the master by an symbol appearing in place of the slave
number. The master will alternate between showing the slave number and the fault, and
the normal status display. The slave will flash the fault that has occurred on its display.
Sensor Trouble
One of the connected sensors is reading out of range. Check the slave display on the slave
with the fault for the sensor that is out of range.
Low AC Voltage
Low line voltage has been detected for more than 10 minutes.
High Freon Pressure
The high Freon pressure switch has been opened.
Low Freon Pressure
The low Freon pressure switch has been open for 5 minutes.
Flow Switch Open
The flow switch for this slave has been opened.
Over Current
The compressor running current has exceeded the programmed value.
High Limit
The high limit sensor temperature has exceeded the programmed value.
Freeze Fault
In cool mode, the freeze sensor measuring the compressor water output temperature is
reading below 38 °F (3.3°C). In heat mode, the sea water temperature has dropped below
the sea water limit and no electric heaters are installed.
No Master Signal
The master transmission on the CAN bus is not received by the slave.
Slave Not Responding
This fault is seen at the master if a programmed slave is not responding.