Steffes 4140 Owner & Installers Manual - Manual (Page 37)

Appendix
HELP MENU
The Comfort Plus contains a Help Menu which may be accessed through the control panel. To access the
Help Menu, press and release the M button until the faceplate displays “HELP”. Scroll through the menu by
pressing either the up or the down arrow button.
Display
Reading
Description
Fxxx Firmware Version Number - Indicates the version of software installed.
O xx Outdoor Temperature - Indicates current outdoor temperature as recognized by the system.
tL:xx Target Level - Indicates the percentage of brick core charge level the system is targeting.
During peak periods the value displays as "tL_".
CL:xx Charge Level - Indicates the percentage of heat storage currently in the brick core.
HE x Heating Elements Active - Indicates the total number of heating elements currently energized.
PC x Power Line Carrier Channel - Indicates the channel on which the system is set to receive PLC
communication signal.
P x Power Line Carrier Net Hit Rate Percentage - Indicates the percentage of "GOOD" communi-
cation packets received by the system from the PLC transmitter system.
PS x Indicates which Specialty Timer the system is currently using. The value displayed will be zero if
the Specialty Timer is not being utilized.
CC_x Charge Mode Operation - Indicates the charge control method being utilized during off-peak
periods.
CA_x A-Peak Mode Operation - Indicates the charge control method being utilized during anticipated
peak periods.
C1_x Specialty Timer #1 Charge Mode - Specialty Applications Only.
C2_x Specialty Timer #2 Charge Mode - Specialty Applications Only.
HUxx Heat Usage - Indicates the amount of input being dissipated by the system.
A_xx Target Discharge Air Temperature - Indicates the discharge air temperature that the system is
targeting.
cxxx Compressor Output Relay Delay Timer - Indicates time remaining before heat pump compressor
is energized. "c ON" indicates the heat pump is energized.
HAZARDOUS VOLTAGE:
Risk of electric shock. Can
cause injury or death.
System may be connected
to more than one branch
circuit. Disconnect power to
all circuits before servicing.
Equipment must be serviced
by a qualified technician.
WARNING
Comfort Plus Appendix A.14
ERROR CODES
The Comfort Plus has an on-board diagnostic system to monitor various
operating conditions. If operating conditions move outside the normal operating
range, an error code is displayed on the faceplate. If there are multiple errors
simultaneously, only the highest priority error code appears. Once corrected,
the next highest priority code will be displayed on the faceplate as “Er—” (i.e.,
Er05).
Error Code Description
01 The lower core (Core A) thermocouple temperature is
out of normal range. An open, shorted, or otherwise
defective thermocouple or a circuit board which is out of
calibration can cause this.
02 The upper core (Core B) thermocouple temperature is out of normal range. This can be
caused by an open, shorted, or otherwise defective thermocouple or a circuit board which is
out of calibration.
03 Room sensor temperature is out of normal range. This can indicate an open thermistor, a
short in the wiring, or a circuit board which is out of calibration.
04 Discharge air sensor temperature is out of normal range. This can indicate an open ther-
mistor, a short in the wiring, or a circuit board which is out of calibration.