Page 20
XP17
Table 8. One Stage — Fan Motor Control RPM Jumper Settings, LED RPM Indicator and P2 DC
Voltage Outputs
Model LED Code*
CFM Profile Pin Select ECM1/Y1
4 3 2 1 RPM (J2) DC Volt
XP17-024 5 OFF ON ON ON 400 12.7
XP17-030 6 OFF ON ON OFF 450 14.3
XP17-036, -042 8 OFF OFF ON ON 600 19.2
XP17-048, -060 9 OFF OFF OFF ON 675 21.6
* LED Code indicates fan motor control LED flash sequence. For example, LED Code 9 indicates 9 slow flashes and pause.
Table 9. Fan Motor Control Error/Fault LED Codes
Unit Status Fan Motor Control LED Possible Cause
Mismatched RPM Fast Flash with no pause
Internal feedback, PWM does not match
target.
CRC Failure Constant ON. Microcontroller CRC failure.
Table 10. Fan Motor Control (A177) Unit LED Codes
Unit Status Unit Status Fan Motor Control LED
One Stage Operation Low Stage — ECM1/Y1 ONLY One slow flash, then short pause.
RPM Indicator
NOTE — There is a long pause between stage
operation and RPM indicator. See tables 1 and 2
for LED RPM indicator.
RPM Indicator
Appropriate number of flashes (See tables 8
and 2).
Flash Flash = Three flashes per second.
Slow Flash = One flash per second.
Short Pause = Two seconds of OFF time.
Long Pause = Five seconds of OFF time.
DEMAND
BEGINS
MISMATCHED
RPM
DEFAULT FAN
MOTOR SPEED
USED
LED CONTINUOUS FAST
FLASH
REPLACE FAN MOTOR
CONTROL BOARD
CRC FAILURE
DEFAULT FAN
MOTOR SPEED
USED
LED CONSTANT ON
REPLACE FAN MOTOR
CONTROL BOARD
SINGLE STAGE
OR EDA
OPERATION
ECM1/Y1
ONLY OR
ECM2/Y2
ONLY
STAGE LED INDICATOR: ONE
SLOW FLASH AND ONE
SHORT PAUSE FOR SINGLE
STAGE OR EDA OPERATION
LED RPM INDICATOR:
EXAMPLE: (2−TON
UNIT) – 5 SLOW
FLASHES AND ONE
LONG PAUSE
DEMAND
ENDED
NO
YES
FAN MOTOR
RPM SET PER
JUMPER
SETTINGS
Figure 8. Fan Motor Control One Stage LED Sequence of Operation
To Next Page
Loading...
Need help?
General