Frigidaire Q4SE Series User's Manual & Installation Instructions page 24

Two stage r-410a single package heat pump
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miswired module indication
Green LED is not on, module does not
power up
Green LED intermittent, module powers
up only when compressor runs
Trip LED is on, but system and
compressor check OK
TRIP LED and ALERT LED flashing
together
ALERT Flash CODE 3 displayed
incorrectly (Compressor short cycling)
ALERT Flash Code 5, 6, or 7 displayed
incorrectly (Open Circuit, Open Start
Circuit or Open Run Circuit)
ALERT Flash Code 6 (Open Start Circuit)
displayed for Code 7 (Open Run Circuit)
or vice-versa
ALERT Flash Code 8 displayed incorrectly
(Welded Contactor)
Specifications & illustrations subject to change without notice or incurring obligations.
O' Fallon, MO | Printed in U.S.A. (06/11)
• Determine if both R & c module terminals are connected.
• Verify voltage is present at module's R & c terminals.
• Determine if R & Y terminals are wired in reverse.
• Verify modules R and C terminals have a constant source.
• Verify Y terminal is connected to 24VAC at contactor coil.
• Verify voltage at contactor coil falls below 0.5VAC when off.
• Verify 24VAC is present across Y & c when thermostat demand
signal is present. If not, R & c are reversed wired.
• Verify R and c terminals are supplied with 19 - 28VAC.
• Verify Y terminal is connected to 24VAC at contactor coil.
• Verify voltage at contactor coil falls below 0.5VAC when off.
• Verify the compressor run and start wires are routed through the
module's current sensing holes.
• Verify the Y terminal is connected to 24VAC at contactor coil.
• Verify voltage at contactor coil falls below 0.5VAC when off.
• Verify the compressor run and start wires are routed through the
correct module sensing holes.
• Determine if module's Y terminal is connected.
• Verify Y terminal is connected to 24VAC at contactor coil.
• Verify 24VAC is present across Y & c when thermostat demand
signal is present. If not, R and c are reversed wired.
• Verify voltage at contactor coil falls below 0.5VAC when off.
• Review Thermostat Demand Wiring (page 10) for Y & c wiring.
Table 9. module wiring Troubleshooting
Recommended Troubleshooting action
¢709011i¤
709011b (Replaces 709011A)

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This manual is also suitable for:

Q4se-x24Q4se-x36Q4se-x48Q4se-x60

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