507404-02
Page 69 of 80
Issue 1448
Integrated Control Diagnostic Modes
(Continued)
Code
Diagnostic Codes/Status of Equipment
Action Required to Clear and Recover
E180
Outdoor air temperature sensor failure.
Only shown if shorted or out of range
(Communicating systems only)
Compare outdoor sensor resistance to temperature resistance charts
in unit installation instructions. Replace sensor pack if necessary. At
beginning of (any) configuration, furnace or air handler control will
sense outdoor air and discharge air temperature sensor(s) If detected
(reading in range), appropriate feature will be set as installed and that
could be seen in 'About ' screen. In normal operation after control rec-
ognizes sensors, alarm will be sent if valid temperature reading is lost.
To get rid of setting and alarm, redo configuration and make sure that
temperature sensor is marked as not installed in indoor Unit ‘About’
screen. When indoor unit control is replaced thermostat will ‘tell’ new
control if temperature sensor is in system or not. Clears 30 seconds
after fault recovered.
E200
Hard Lock out - Rollout circuit open or
previously open
Correct cause of rollout trip or replace flame rollout switch. Test fur
-
nace operation. Cleared after fault recovered.
E201
Indoor blower/communication failure
- Unable to communicate with blower
motor
Indoor blower communication failure including power outage. Lost
communication with indoor blower motor. Possible causes: motor
not powered, loose wiring. Problem may be on control or motor side.
Cleared after fault recovered.
E202
Indoor blower motor mis-match - indoor
motor horsepower does not match unit
capacity
Incorrect appliance capacity code selected. Check for proper config
-
uring under Unit Size Code for Furnace/Air Hander on configuration
guide or in installation instructions. Cleared after the correct match is
detected following a reset. (Remove thermostat from system while ap
-
plying power and reprogramming)
E203
Appliance capacity size is NOT pro
-
grammed. Invalid unit codes. Refer to
configuration flow chart.
No appliance capacity code selected. Check for proper configuring
under Unit Size Codes for Furnace on configuration guide or in instal
-
lation instruction. Critical Alert Cleared after valid unit code is read fol-
lowing a reset (remove thermostat from system while applying power
and reprogramming)
E204
Gas valve mis-wired
Check gas valve operation and wiring. Clears when repaired
E205
Gas valve control relay contact shorted
Check wiring on control and gas valve. If wiring is correct replace
control.
E206
Gas valve second-stage relay failure
Furnace will operate on 1st stage for remainder of the heating de
-
mand. Will clear after fault recovered. If unable to operate 2nd stage
replace control.
E207
Hot surface igniter sensed open - Refer
to troubleshooting
Measure resistance of hot surface igniter. Replace if open or not
within specified range found in 10M. Resumes normal operation after
fault is cleared.
E223
Low pressure switch failed open
Check pressure(inches W.C) of low pressure switch closing on heat
call. Measure operating pressure (inches w.c.). Inspect vent and
combustion air inducer for correct operation and restriction. Resumes
normal operation after fault is cleared.
E224
Low pressure switch failed closed -Re
-
fer to troubleshooting
Check pressure(inches W.C) of low pressure switch closing on heat
call. Measure operating pressure (inches w.c.). Inspect vent and
combustion air inducer for correct operation and restriction. Resumes
normal operation after fault is cleared.
E225
High pressure switch failed open -Refer
to troubleshooting
Check pressure(inches W.C) of high pressure switch closing on heat
call. Measure operating pressure (inches w.c. Inspect vent and com
-
bustion air inducer for correct operation and restriction Resumes
normal operation after fault is cleared.
E226
High pressure switch failed closed
-Refer to troubleshooting
Check operation of high pressure closing on heat call. Measure oper-
ating pressure (inches w.c.). Inspect vent and combustion air inducer
for correct operation and restrictio. Resumes normal operation after
fault is cleared.
Summary of Contents for A96US2V
Page 3: ...507404 02 Page 3 of 80 Issue 1448 EXPANDED VIEW Figure 1 ...
Page 31: ...507404 02 Page 31 of 80 Issue 1448 Figure 38 ...
Page 38: ...507404 02 Page 38 of 80 Issue 1448 Figure 56 TRAP DRAIN ASSEMBLY USING 1 2 PVC or 3 4 PVC ...
Page 41: ...507404 02 Page 41 of 80 Issue 1448 Table 9 ...
Page 45: ...507404 02 Page 45 of 80 Issue 1448 ...
Page 47: ...507404 02 Page 47 of 80 Issue 1448 Integrated Control Figure 56 ...
Page 78: ...507404 02 Page 78 of 80 Issue 1448 Start Up Performance Check List UNIT SET UP ...
Page 79: ...507404 02 Page 79 of 80 Issue 1448 UNIT OPERATION Heating Mode Cooling Mode ...