Steffes 7140 - Manual (Page 43)

HELP MENU
The Comfort Plus Commercial Hydronic system 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 this 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" communica-
tion 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.
ERROR CODES
The Comfort Plus Commercial Hydronic system 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. Error codes will be displayed on the faceplate as “Er—” (i.e., Er05).
Error Code Description
03 Outlet water temperature is out of normal operating range.
This can indicate an open sensor, a short in the wiring, or a
circuit board which is out of calibration.
04 Discharge air temperature is out of normal operating range.
This can indicate an open sensor, a short in the wiring, or a
circuit board which is out of calibration.
05 Outdoor sensor (direct wired) temperature reading is out of
normal operating range. The sensor circuit may be open or
shorted, the processor control board may be out of calibration,
or there may be an incorrect value in L035.
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 servic-
ing. Equipment must be
serviced by a qualified
technician.
WARNING
Appendix
Comfort Plus Commercial Hydronic Appendix
n
A.16