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EVC STATUS COdES
EVC STATUS LED (Non Heat Pump Systems)
Flash
1
Cool mode / No active call
2
Active call for 1st stage cooling
3
Active call for 2nd stage cooling
NOTE:
Single stage OD systems will report 2nd stage flash codes
EVC STATUS LED (Heat Pump Systems)
Flash
1
Cool mode / No active call
2
Active call for 1st stage cooling or defrost
3
Active call for 2nd stage cooling or defrost
4
Heat mode selected or System switch off
5
Active call for 1st stage heating
6
Active call for 2nd stage heating
NOTE:
Single stage OD systems will report 2nd stage flash codes
EVC FAULT COdES
EVC
Fault LED
OFF
No Fault
1
Stepper Motor coil has an open circuit or intermittent short (Replace coil)
2
Control has detected an internal failure (Replace EEV control, EVC)
3
Saturated Gas Sensor input out of range (Verify resistance, 5VDC output from control)
4
Evaporator Gas Sensor input out of range (Verify resistance, 5VDC output from control
5
Stepper Motor Coil is shorted (Replace coil)
6
Valve is not responding to a change in position. (Possible stuck valve)
7
High superheat (Low charge or restriction)
10
Low superheat (Check airflow, possible stuck valve)
11
Condensate drain switch activated for 100 seconds (Check condensate switch and drain
Indoor frost protection activated (Check refrigerant charge and airflow)
13
Internal communication error (All OD operation is terminated)
14
Configuration fault (All operation is terminated) (Cycle power & check if PM error is present)
15
Outdoor status fault (All operation is terminated)
16
1) EEV will try to go to a safe position, cooling attempt allowed
2) K1 relay opens on EVC, Yo disabled
3) Cooling attempt allowed, 5 consecutive Y calls with same condition disables Yo
4) Any internal communication wire broken/disconnected will trigger error the fault and all OD operation
will be terminated. EHC will operate normally.
Unit LED
1 Flash
Normal
Rapid
Communication Busy Error
Off
No power
Description
(2)
(3)
(4)
13
FAULT
FAULT
D28
R80
R73
STATUS
LED
UNIT
LED
STATUS
FAULT
UNIT
FAULT
LED
OFF
ON
410
22
J4
OPEN
TEST
CLOSE
(1)
(1)
(2)
(2)
AM7A0C36H31-SF-1A
K2
R70
R100
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