Lennox XP25-024-230-01, Инструкция по установке и обслуживанию

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XP25 Fan Assembly
Page 72
XP25
208/240
Voltage “IN”
L1
208/240
Voltage “OUT”
N2
N1
L2
Figure 53. XP25 4- and 5-ton filter board (EMC)
CHECKOUT:
Voltage IN should read the same value as the Voltage OUT . With filter isolated from system, resistance between L1 and
L2 should be the same as resistance between N1 and N2 .
STATUS CODES:
None
ERROR CODES:
None
Outdoor Fan Operation and Checkout
OPERATION:
T
hese units use an integrated control and motor that is
programmed for variable-capacity operation. The fan speed is
controlled by the iComfort Wi-Fi
®
thermostat.
CHECKOUT:
VAC Voltage Check
Check for 208/240 VAC power at inverter contactor (red wires) (see figure 54
).
With unit operating, check for main VAC to motor and outdoor control VDC output to motor:
1. No voltage present – Check main power
2. Voltage present – Perform DC volt checks (19 -23 VDC between FAN PWM and COM) (see figure 54
)
.