Johnson Controls Frick AcuAir User Manual

210.100-IOM (JUL 2021)
Page 51
AcuAir Hygienic Air Units
Maintenance
Troubleshooting
Symptom Probable causes and corrections
Motor doesn’t start Check MOA module to see if in AUTO - green light if on; red light if
fuse is blown
Check blower door switch
Check smoke and ammonia detectors, if applicable
Check end switch on OA dampers, if applicable
Check fuses
Check overloads
Check power to coil on starter
Check power from starter to motor
Motor starts but quits shortly after Check fan belts
Check tubes to airow switch to be clean
Check power through air ow switch
Check rotation of fan
Cooling doesn’t come on Check MOA module to see if in AUTO - green light if on; red light if
fuse is blown
Check setpoint for cooling
Check OA lockout setpoint. Ensure lockout is below OA temperature
Check power to valve
Steam valve doesn’t modulate Check setpoint for heat
Check OA lockout setpoint. Ensure lockout is above OA temperature
Check output for steam valve
Direct-red burner doesn’t light Check setpoint for heat
Check OA lockout setpoint. Ensure lockout is above OA temperature
Check MOA module to see if in AUTO - green light if on; red light if
fuse is blown
Check burner safety circuit. Eg. High gas pressure switch, Low gas
pressure switch, high temperature limit, burner door switch
Check to make sure outside air dampers are open and return
dampers are shut
Check burner airow switch
Check and clean UV scanner
Check and gap pilot assembly (3/16 in. gap)
Check gas supply
Indirect-red burner doesn’t light Check setpoint for heat
Check OA lockout setpoint. Ensure lockout is about OA temperature
Check MOA module to see if in AUTO - green light if on; red light if
fuse is blown
Check blower on burner
Check lockout alarm on Honeywell control
Check burner airow switch
Check low re end switch on burner damper motor
Check spark rod and ame rod
Check pilot assembly
Exhaust fan doesn’t start Check MOA module to see if in AUTO - green light if on; red light if
fuse is blown
Check disconnect switch on fan
Check overload
Check power to and from starter
Check damper end switch, if applicable

Johnson Controls Frick AcuAir Specifications

General

Brand	Johnson Controls
Model	Frick AcuAir
Category	Air Compressor
Language	English