Filter
Top Products
12
© 2011 Emerson Climate Technologies
Printed in the U.S.A.
AE8-1385
Application Engineering
BULLETIN
Red “LOCKOUT”
Flash Code 5
Yellow Off
Compressor (Moderate Run)
Trip
Compressor is locked out
after 4 consecutive or 10 total
compressor (moderate run) trip
events
1. Evaporator blower is not running
• Check blower relay coil and contacts
• Check blower motor capacitor
• Check blower motor for failure or blockage
• Check evaporator blower wiring and connectors
• Check indoor blower control board
• Check thermostat wiring for open circuit
2. Faulty metering device
• Check TXV bulb installation (size, location and contact)
• Check if TXV/fi xed orifi ce is stuck closed or defective
3. Condenser coil poor air circulation (dirty, blocked, damaged)
4. Low refrigerant charge
Red “LOCKOUT”
Flash Code 6
Yellow Off
Open Start Circuit
Current only in run circuit
1. Run capacitor has failed
2. Open circuit in compressor start wiring or connections
• Check wiring and connectors between supply and the
compressor “S” terminal
3. Compressor start winding is damaged
• Check compressor motor winding resistance
Red “LOCKOUT”
Flash Code 7
Yellow Off
Open Run Circuit
Current only in start circuit
1. Open circuit in compressor run wiring or connections
• Check wiring and connectors between supply and the
compressor “R” terminal. Confi rm proper wire routing per
Figure 1.
2. Compressor run winding is damaged
• Check compressor motor winding resistance
Red “LOCKOUT”
Flash Code 10
Over Current Protection
Current to PROT is greater than
2A mps
1. Check for contactor shorted to ground
2. Check for mis-wiring to the PROT terminal
Table 2 Continued
The contents of this publication are presented for informational purposes only and they are not to be construed as warranties or guarantees, express or implied, regarding the products or
services described herein or their use or applicability. Emerson Climate Technologies, Inc. reserves the right to modify the designs or specifi cations of such products at any time without
notice. Emerson Climate Technologies, Inc. does not assume responsibility for the selection, use or maintenance of any product. Responsibility for proper selection, use and maintenance of
any Emerson Climate Technologies, Inc. product remains solely with the purchaser and end-user.