Trane 7 Series User Manual

TAM721
EVC FAULT CODES (RED LED)
EVC STATUS CODES (GREEN LED)
FAULT
R80
R70
D
D28
R73
R100
K2
J4
TEST
CLOSE
410
FAULT
UNIT
22
OPEN
STATUS
FAULT
OFF
ON
STATUS
LED
FAULT
LED
UNIT
LED
UNIT LED (BLUE LED)
UnitLED
1Flash
Rapid
Off
SOLIDON
Description
Normal(1flashevery4seconds)
CommunicationBusyError(2flashespersecond)
NoPower
CommunicationscannotbeestablishedwiththeAFC
EVC
Fault LED Description
OFF Standb
y
1 Stepper Motor coil has an open circuit or intermittent short
2
Control has detected an internal failure (Replace EEV control, EVC)
3
Gas Temperature Sensor (GT) input out of range (Verify resistance, 5VDC output from control)
(1)
4 Evaporator Temperature Sensor (ET) input out of range (Verify resistance, 5VDC output from control) (1)
5
Stepper Motor Coil is shorted
(2)
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)
(3)
11
Condensate drain switch activated for 100 seconds (Check condensate switch and drain)
(2)
13
Indoor frost protection activated (Check refrigerant charge and airflow)
(2)
14
Internal communication fault (All operation is terminated) (Cycle power & check wire terminations)
15
Configuration fault (All operation is terminated) (Cycle power & check if PM error is present)
16
Outdoor status fault (All operation is terminated
)
(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 Y
o
NOTES:
EVC STATUS LED (Non Heat Pump Systems)
Flash
1 Cool mode selected / No active call
2 Active call for 1st stage cooling
3
A
ctive call for 2nd stage cooling (1)
(1) Single stage OD systems will report 2nd stage flash codes
EVC STATUS LED (Heat Pump Systems)
Flash
1 Cool mode selected / No active call
2 Active call for 1st stage cooling or defrost
3 Active call for 2nd stage cooling or defrost (1)
4 Heat mode selected or Thermostat system switch off
5 Active call for 1st stage heating
6
A
ctive call for 2nd stage heating (1)
(1) Single stage OD systems will report 2nd stage flash codes
NOTE:
NOTE:

Trane 7 Series Specifications

General

Brand	Trane
Model	7 Series
Category	Air Handlers
Language	English