Lennox EL23XCV Series Manual page 44

Error Code Recall Mode (NOTE – control must be in idle mode)
To enter error code recall mode, push and hold button until solid E appears, then release button. Control displays up to 10 error codes
E
stored in memory. If E 0 0 0 0 is displayed, there are no stored error codes.
≡
To exit error code recall mode, push and hold button until solid three horizontal bars appear, then release button. Note - Error codes are
not cleared.
To clear error codes stored in memory, continue to hold button while the 3 horizontal bars are displayed. Release button when solid c is
c
displayed.
c Push and hold for one (1) second, release button. 7-Segment displays 0 0 0 0 and exits error recall mode.
FIELD TEST MODE OPERATION
The field test mode allows the unit to be put into diagnostic
mode and allows the installer to perform multiple tests on
the control / unit.
Diagnostic Mode
Diagnostic mode is only available when the system is idle
or during an active / suspended call for heating or cooling.
Diagnostic mode is terminated when the exit command is
given, the button is pressed and released without entering
the diagnostic menu or 10 minutes has passed, whichever
comes first.
When this mode is selected all installed temperature sen-
sor valves (non-open and non-short) are shown on the
7-segment display. The following system status codes are
displayed:
• Cooling
• Cooling stage or cooling percentage demand operation
• Active error codes
Outdoor Fan Mode
Diagnostic mode is only available while the system is in
idle mode. This mode can be exited with the proper com-
mand or after 10 minutes has passed.
In diagnostic mode, the control energizes the outdoor fan
at the highest speed.
CHARGE MODE OPERATION
To initiate the EL23XCV Charge Mode function, install the
jumper across the two Charge Mode Pins (CHRG MODE)
on the outdoor control. The Charge Mode can be used
when charging the system with refrigerant, checking the
refrigerant charge, pumping down the system and per-
forming other service procedures that requires outdoor
unit operation at 100% capacity.
EL23XCV Charge Mode Operation with an S30/S40
Communicating Thermostat
Installing a jumper on the Charge Mode Pins will initiate
compressor operation and outdoor fan motor at 100% ca-
pacity and will provide a signal to the indoor unit to initiate
indoor blower operation at the maximum cooling air vol-
ume. To exit the charge mode, remove the Charge Mode
Jumper. The Charge Mode has a maximum time of 60
minutes and will automatically exit the charge mode after
60 minutes if the charge mode jumper is left in place.
EL23XCV Charge Mode Operation with a Convention-
al 24VAC Non-Communicating Thermostat
On applications with a conventional 24VAC non-commu-
nicating thermostat, the charge mode jumper must be in-
stalled on the Charge Mode Pins after providing a Y1 cool-
ing demand to the EL23XCV to initiate the Charge Mode.
A cooling blower demand must also be provided to initi-
ate blower operation on the cooling speed on the indoor
unit. The compressor and outdoor fan motor will operate
at 100% capacity. To exit the charging mode, remove the
Charge Mode Jumper and remove the Y1 Cooling de-
mand and indoor blower demand. The Charge Mode has
a maximum time of 60 minutes and will automatically exit
the charge mode after 60 minutes is the charge mode
jumper is left in place.
Charge Mode
Disabled
CHRG
MODE
Page 44
Charge Mode
Enabled
CHRG
MODE