Carrier 38EV024320 User Manual
Page 25
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ERROR CODE #10 - CONTACTOR CONTROL FAILURE
REASON: THERMISTOR TEMPERATURES DID NOT CHANGE AFTER 5 MINUTES OF RUN TIME,
(i.e. REFRIGERANT NOT CIRCULATING IN SYSTEM) see Note 4.
POSSIBLE CAUSES: 1) Failed contactor, or control board output.
2) High, low pressure, or ESS (-036 only) switch.
3) Very low charge.
4) Stuck reversing valve.
Reference Figure 25
1) inverter POWER (red) LED can be viewed from above the control box. CAREFULLY remove white safety shield.
Look downward into box beyond contactor and behind main controi board at inverter board. See Figure 7
for LED location. Red LED shouid be on whenever contactor is energized, and outdoor unit power is on.
2) ESS - to - LPS spiice is iocated in compressor terminai box.
3) -036 Modeis Oniy
If compressor has been serviced or repiaced, check for proper 3-phase wiring connections.
If leads are miswired, compressor will not pump in reverse direction.
4) Error code may not appear untii up to 5 minutes after startup (outdoor fan energizes).
A87474