User's Manual
Table Of Contents
- Table of contents
- FCC and IC statements
- 1. Introduction
- 1.1 Orion EMS devices
- 1.2 Terminology
- 1.3 General about Orion Service
- 1.4 General about alarms
- 1.5 Events and commands
- 1.6 Basic EMS logic
- 1.7 Orion EMS parameters
- 1.8 Operator templates
- 1.9 Setback override
- 2. Thermostat buttons and display
- 3. Energy management summary and alarm list
- 4. Real time room status
- 5. Thermostats list
- 6. Occupancy report
- 7. Energy statistics report
- 8. Tools/Options
- 9. Orion EMS in SysMon
- 10. Maintenance
- Appendix A: Quick reference of technical data
- Appendix B: Troubleshooting
- Appendix C: Read more
- Revision history
55
DRAFT 66 8003 001-8
A/C unit cooling when calling for heat (and vice versa)
1. If the unit is a heat pump, make sure that the thermostat is properly configured
to control the heat pump. See Daily Use Manual Orion EMS for proper
configuration of a heat pump.
2. If the unit is not a heat pump, or if the thermostat is correctly configured, check
the outputs of the thermostat to ensure that it is calling for heat or cool properly.
a. First check the outputs at the thermostat.
i. If OK, check the outputs of the thermostat at the connection to the HVAC
unit.
It is possible that the wiring is crossed or somehow incorrect.
ii. If all is OK, the property needs to have their HVAC technician check the
unit.
b. If the thermostat outputs are incorrect:
i. First check the configuration of the thermostat by using Orion Service to
read out the parameters of the thermostat; do not just rely on looking at
the parameters in
the VISIONLINE or Orion EMS software. If the parameters are incorrect,
make the necessary changes.
ii. Connect a new thermostat to see if the problem disappears. If it does,
replace the thermostat. If the problem stays, there is a problem with the
wiring or parameters that must be fixed.
Fan continues to run even when the thermostat is turned off
1. First, wait a couple of minutes to see if the fan does eventually turn off. Some air
handlers have a built-in function that keeps the fan running for a time after the
heating or cooling function is turned off.
2. Secondly, use Orion Service to check the parameters of the thermostat – ensure
that the ‘Fan on when satisfied’ function is set to ‘no’.
3. Finally, test the outputs of the thermostat to see which ones that are on. If a
fan output is active and the thermostat is not calling for fan (use the
Diagnostics feature of Orion Service to confirm that
the thermostat is not calling for fan), change the thermostat as it has a stuck
relay. If no fan output is active, check all other outputs to find out if any are
active. It is possibly a crossed or shorted wire.