Haier GE NF96DV Service Manual page 8

CFM LED
An amber LED is provided on the control board to display
CFM. To determine what CFM the motor is delivering at any
time, count the number of times the amber LED flashes.
Each flash signifies 100 CFM; count the flashes and multiply
by 100 to determine the actual CFM delivered (for example:
5 flashes x 100 = 500 CFM).
LED Status
LED Off No demand for high heat
LED On HIgh heat demand, operating normally
High heat demand, high pressure
LED Flashing
switch not closed
Table 2. High Heat State Green LED
LED Status
No power to control or control hardware
LED Off
fault detected
LED On Normal operation
1 Flash Flame present with gas valve de-energized
Pressure switch closed with combustion air
2 Flashes
inducer de-energized
Low-fire pressure, rollout or limit switch
3 Flashes
open
4 Flashes Primary limit switch open
5 Flashes Not used
6 Flashes Pressure switch cycle lockout
7 Flashes Lockout, burners fail to light
8 Flashes Lockout, burners lost flame too many times
9 Flashes Line voltage polarity incorrect
Table 3. Diagnostic Codes Red LED
Pin #
1 Ignitor (Hot)
2 Combustion Air Inducer High Speed
3 Combustion Air Inducer Low Speed
4 Combustion Air Inducer Neutral
5 Ignitor Neutral
Table 4. Control 5-Pin Terminal Designation
Airflow Adjustments
Cooling Mode
The units are factory set for the highest airflow for each
model. Adjustments can be made to the cooling airflow by
repositioning the jumper plug marked COOL – A, B, C, D (see
Figure 3). To determine what CFM the motor is delivering at
any time, count the number of times the amber LED on the
control board flashes. Each flash signifies 100 CFM; count
the flashes and multiply by 100 to determine the actual CFM
delivered (for example: 5 flashes x 100 = 500 CFM).
Description
Description
Function
Page 8
Pin #
1 Gas Valve Second Stage
2 Second Stage Prove Switch
3 Rollout Switch In
4 Ground
5 24V Hot
6 Primary Limit In
7 Gas Valve First Stage
8 Gas Valve Common
9 24V Neutral
10 Ground
11 Rollout Switch Out
12 First Stage Prove Switch
Table 1. 12-Pin Terminal Designation
Heating Mode
These units are factory set to run at the middle of the heating
rise range as shown on the unit rating plate. If higher or lower
rise is desired, reposition the jumper plug marked HEAT - A,
B, C, C (see Figure 3). To determine what CFM the motor is
delivering at any time, count the number of times the amber
LED on the control board flashes. Each flash signifies 100
CFM; count the flashes and multiply by 100 to determine the
actual CFM delivered (for example: 5 flashes x 100= 500.
Adjust Tap
Airflow amounts may be increased or decreased by 10% by
moving the ADJUST jumper plug (see Figure 3) from the
NORM position to the (+) or (-) position. Changes to the
ADJUST tap will affect both cooling and heating airflows.
The TEST position on the ADJUST tap is not used.
Continuous Blower Operation
The comfort level of the living space can be enhanced when
using this feature by allowing continuous circulation of air
between calls for cooling or heating. The circulation of air
occurs at half the full cooling airflow rate.
To engage the continuous blower operation, place the
fan switch on the thermostat into the ON position. A call
for fan from the thermostat closes R to G on the ignition
control board. The control waits for a 1 second thermostat
delay before responding to the call for fan by ramping the
circulating blower up to 50% of the cooling speed. When the
call for continuous fan is satisfied, the control immediately
ramps down the circulating blower.
Function
31-5000727 Rev. 0