Trane VAV VV550 LonTalk, Руководство по установке и эксплуатации

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104 VAV-SVP01A-EN
Troubleshooting
• Check power output for correct binary output. Should have 24VAC; if it does not measure the
power input to on TB1-1 24VAC input and TB1-2 of the VV550 board. The supply voltage
should be between 20 and 28 VAC (24VAC cataloged). However, voltages at either extreme
may result in system instability.
• Heat Triac(s) can be checked with purchasing a 24VAC light bulb and see if it lights up on call
for Heat stage VV550. If light bulb does not light up replace VV550.
Notice:
Equipment Damage!
VAV VV550 Controller outputs are switched to ground. Do not jumper 24VAC to Binary output
Triacs because damage will occur.
• Move electric heat relay wires from VV550 and apply 24VAC directly.
Note: Make sure air is flowing across the elements.
• Electric heat stage should energize. If it does not; check wiring, safeties and electric heat
contactor. Replace components as necessary.
VAV Proportional Hot Water Failure Procedures
Check binary outputs
WARNING
Live Electrical Components!
During installation, testing, servicing and troubleshooting of this product, it may be necessary
to work with live electrical components. Have a qualified licensed electrician or other individual
who has been properly trained in handling live electrical components perform these tasks.
Failure to follow all electrical safety precautions when exposed to live electrical components
could result in death or serious injury.
In the event that the heat outputs are not energizing, properly inspect the following:
1. Zone temperature is at or above the heating set point.
• Increase the VV550 heating set point.
2. Verify the output configuration in the VV550 setup menu.
• Unit needs to be configured as proportional hot water
3. Tracer Summit has the heat output disabled
• Check group, global, and/or Tracer overrides to make sure they are not inhibiting heat
operation.
4. Heat relays have failed.
• If VAV VV550 is calling in the status menu and light bulb is on for Binary output to open the
valve and Triac is not closed then check VV550 Triac output; wiring; and Relay output.
• Check Binary outputs. See Figure 59, p. 107 and Figure 60, p. 108 for correct outputs. Should
have 24VAC; if it does not measure the power input to TB1-1 24VAC input and ground( )
of the VV550 board. The supply voltage should be between 20 and 28 VAC (24VAC
cataloged). However, voltages at either extreme may result in system instability.
• Heat Triac(s) can be checked with purchasing a 24VAC light bulb and see if it lights up on call
for Heat output to be open or closed by VV550. If light bulb does not light up replace VV550