![background image](http://html1.mh-extra.com/html/mars/century-comfort-aire-hrg18-s1p-series/century-comfort-aire-hrg18-s1p-series_service-manual_1730555045.webp)
Service Manual -
HRG18xxS1P
508206-01
Issue 2140
Page 45 of 83
Configuring Unit
When installing a replacement outdoor control, the unit selection code may have to be manually assigned using the
7-segment display and push button on the control. The unit code sets unit type, capacity and outdoor fan profile.
Outdoor control is in
IDLE
mode
(No heating or cooling demand)
To enter
unit selection
mode
, push and hold the
button next to the 7-segment
display until
dash
symbol
appears and immediately
release button. Once dash
starts flashing, proceed to
next step.
Turn room thermostat
to
OFF
Push and hold button until the solid
sequence is displayed on the
7-segment display then immediately
release
the
button.
This
configuration sequence allows the
installer to select unit selection code
(number combination) that matches
the outdoor unit type and inverter.
If three horizontal bars display in any
part of the 7-segment display string
during power-up, the outdoor
control did not store the unit
selection code. If this occurs, the
configuration sequence for that
section of the display string must be
repeated.
Yes
No
NOTE - Either the
sequence
will repeat 5 times and if a
selection is not made the control
will return to idle mode.
NOT
SELECTED
SELECTED
Configuring Unit Selection Code
Power-up
- Unit selection code (two-digit number) displayed
represents unit size code (outdoor unit capacity).
During initial power-up, firmware version, unit type, unit capacity
and unit selection code will appear on the 7-segment display.
58
60
62
63
SELECTED
NOT
SELECTED
UNIT SELECTION
CODE
1. When
ton immediately. [Display flashes.]
2. Push and hold button until selection stops flashing during
one of the three cycles. [Release push button]
3. If selection is not made during those three cycles the control
returns to idle mode.
figuration mode and resets.
UNIT SELECTION
CODES
Press and hold the button during
the cycling display.
UNIT
EXAMPLE 7-SEGMENT DISPLAY STRING
FIRMWARE
VERSION
UNIT
TYPE
UNIT
CAPACITY
UNIT
CODE
.
IDLE MODE
(NO DEMAND)
.
If three horizontal bars are shown in the 7-segment display
during power-up, the outdoor control did not store the last
quence for that setting must be repeated.
H P
˜
˜
PU
–
–
2 TON - HP mode
3 TON - HP mode
4 TON - HP mode
5 TON - HP mode
HRG1836S1P
HRG1836S1P
HRG1860S1P
HRG1860S1P
Figure 18. Outdoor Control 7-Segment Unit Status Displays