AAON RK-60 - Manual (Page 12)

12
TROUBLE POSSIBLE CAUSE
1. Check power at line side of contactor(s).
2. Thermostat not set for cooling.
1. Overload thermal protector open in motor.
2. Contactor not closing.
3. Motor failed.
1. Line voltage too high.
1. Blower running backwards.
2. Dirty air filters.
3. Duct obstruction.
4. Belt loose.
1. Check supply water and temperature.
2. Check water control valves operation.
3. Check water temperature rise entering and leaving
unit to determine if adequate water is flowing.
SYSTEM OFF
SERVICING Continued
COOLING - CHILLED WATER
EVAPORATOR BLOWER WILL NOT RUN
ROOFTOP UNIT REPLACEMENT PARTS
Replacement parts for AAON equipment may be obtained from AAON. When ordering parts, always reference the
unit model number, serial number and part number.
AAON, Inc.
Customer Service Department
2425 South Yukon Ave • Tulsa, Oklahoma 74107
Phone: 918-583-2266 • Fax: 918-382-6364
ALWAYS USE AAON SPECIFIED PARTS
FAN MOTOR RUNS HOT AND CUTS OUT
BLOWER DOES NOT DELIVER AIR
BLOWER COMES ON, BUT LITTLE OR NO
COOLING