Troubleshooting - Bryant 619CNF Installation, Start-Up And Service Instructions Manual

PROBLEM
System Does Not Start.
System Does Not Cool Properly.
System Does not Heat Properly.
Ice or frost has Formed
on Indoor Coil.†
Insufficient Airflow.
*If fuse blows or circuit breaker trips again after first start attempt, DO NOT attempt to start system again.
Contact your local dealer for assistance.
†When outdoor temperature is approximately 55 F or below, indoor coil frosting may occur when system is
operated in cooling or maximum dehumidification mode. Units are not intended to operate below 55 F with-
out appropriate accessories.
Table 7 — Troubleshooting
CAUSE
Blown fuse or circuit breaker tripped at building power
entry.
Indoor and/or outdoor unit disconnect switch is off.
Thermostat is set to night mode.
Power failure.
Unit is in off mode.
Three-minute time delay is running.
Temperature is above or below the selected
temperature.
Air filter(s) in indoor unit is dirty or needs to be
replaced.
Temperature is set too high or too low.
Outdoor unit outdoor coil restricted.
Fan speed is set too low.
Air filter(s) in indoor unit is dirty or needs to be
replaced.
Temperature is set too high or too low.
Outdoor unit outdoor coil restricted.
Fan speed is set too low.
Outdoor unit outdoor coil is frosted up.
Low outdoor-air temperature.
Air filter(s) in indoor unit is dirty or needs to be
replaced.
Air filter(s) in indoor unit is dirty or needs to be
replaced.
Fan coil unit coil is blocked.
Replace fuse or reset circuit breaker.*
Turn on disconnect switch(es).
Cancel mode using Day/Night button on thermostat.
Restore power.
Press Mode button on thermostat until thermostat dis-
plays the desired unit mode.
Wait for 3 minutes.
Select new temperature using the thermostat.
Clean or replace air filter(s).
Reset temperature to desired comfort setting using
the thermostat.
Remove obstruction.
Adjust fan speed to high or auto. using the Fan
button on the thermostat.
Clean or replace air filter(s).
Reset temperature to desired comfort setting using
the thermostat.
Remove obstruction.
Adjust fan speed to high or auto. using the Fan
button on the thermostat.
Check manual defrost timer setting and adjust as nec-
essary.
Run system in fan-only mode until frost is gone.
Clean or replace air filter(s).
Clean or replace air filter(s).
Clean air discharge louvers.
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TYPICAL SOLUTION