Steffes 6140 - Manual (Page 30)

Appendix
HELP MENU
The Comfort Plus Commercial 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" communication
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 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 on the faceplate as “Er—”
(i.e., Er05).
Error Code Description
04 Discharge air sensor temperature is out of normal operat-
ing range. This can indicate an open sensor, a short in the
wiring, or a circuit board which is out of calibration. Take
an ohm reading across the sensor to ensure proper opera-
tion, check the wiring, and verify the value in L035. Verify
that the supply air blower is connected to the supply blower wiring harness located in the base
of the system. Compare the sensor reading to the value in L112 to verify proper calibration of
the circuit board. Approximate ohm readings are 70°F = 1,199 ohms; 80°F = 941 ohms;
95°F = 646 ohms.
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
Appendix
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A.06 Comfort Plus Commercial