Structural Concepts BLEND NM4855RSSV User Manual page 27

TROUBLESHOOTING (TO BE PERFORMED BY TRAINED SERVICE PROVIDERS ONLY), PAGE 2 OF 4
CONDITION
Fans Emit Check that the case is aligned, level and plumb.
Excessive Noise
Check evaporator fans for cleanliness.
Unplug/power off fan motors. Check motor shaft for bearing wear.
Check that fan motors are securely mounted in brackets.
Verify that fan blades are securely mounted to fan motor.
Check that nothing is preventing blade rotation.
Check that the fan shroud is properly secured.
Fans Are Not Check that the MAIN power switch is on.
Working
Check that fans are plugged in at the fan shroud.
Check for foreign material obstructing fan performance.
Check that fan blades freely rotate within fan shrouds
Check that power is going to fans
Check that fan wiring is connected on terminal blocks.
System Not Check that the utility power is on.
Operating
Check that the MAIN power switch is on.
Check the circuit breaker box for tripped circuits.
TROUBLESHOOTING
27