Lennox iComfort SL18XC1 Series, Installation And Service Procedure

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Page 31
XP17
Table 11. Fan RPM Profiles
Fan RPM
Profile
Model Number Stage 1
Pulse Width
Modulation
Percentage
Stage 1
Revolutions
Per Minutes
Stage 2
Pulse Width
Modulation
Percentage
Stage 2
Revolutions
Per Minutes
EDA Stage
Pulse Width
Modulation
Percentage
EDA Stage
Revolutions
Per Minutes
0 XC/XP17-024 55 400 55 400 55 400
1 XC/XP17-030 62 450 62 450 62 450
2 Not assigned 69 500 69 500 69 500
3 Not assigned 71 550 76 550 71 550
4 XC/XP17-036 and -042 83 600 83 600 83 600
5 Not assigned 90 650 90 650 90 650
6 XC/XP17-048 and -060 92 675 92 675 92 675
7 Not assigned 97 700 97 700 97 700
8 Not assigned 48 350 55 400 27 200
9 Not assigned 55 400 62 450 27 200
10 XP21-024 58 425 69 500 27 200
11 XC21-024 65 475 76 550 27 200
12 XC/XP21-036 72 525 83 600 30 225
13 Not assigned 79 575 90 650 30 225
14 XC21-048, - 060 and
XP21-048
83 600 92 675 30 225
15 XP21-060 86 625 97 700 30 225
Seven-Segment Alert and System Status
Codes
Alert codes are displayed using the seven-segment display
located on the outdoor control.
NOTE — System fault and lockout alarm code displays
takes precedence over system status (cooling, heating
stages or defrost/dehumidification).
The seven-segment will display an abnormal condition
(error code) when detected in the system. A list of the
codes are shown in table 12.
RESETTING ALERT CODES
Alert codes can be reset manually or automatically:
4. Manual Reset
Manual reset can be achieved by one of the following
methods:
Disconnecting R wire from the main control's R
terminal.
Turning the indoor unit off and back on again
After power up all existing codes are cleared.
5. Automatic Reset
After an alert is detected, the main control continues to
monitor the unit's system and compressor operations.
When/if conditions return to normal, the alert code is
turned off automatically.