Trane TR200 Operating Instructions Manual page 72

Symptom
Acoustic noise or vibration
(e.g. a fan blade is making Resonances, e.g. in the motor/fan
noise or vibrations at system
certain frequencies)
Table 9.1 Troubleshooting
BAS-SVX54B-EN
TR200 D-Frame Operating Instructions
Possible cause
Bypass critical frequencies by using
parameters in parameter group
4-6* Speed Bypass
Turn off over-modulation in
14-03 Overmodulation
Change switching pattern and
frequency in parameter group
14-0* Inverter Switching
Increase Resonance Dampening in
1-64 Resonance Dampening
Test
Check if noise and/or vibration
have been reduced to an
acceptable limit
Basic Troubleshooting
Solution
69