Honeywell EnviraCOM R7284B Instructions D'installation page 11

No Ignition
Low Voltage
XX% low
Internal Error
Flame Proven
Out of Sequence
Flame Proven
During On Delay
Flame Proven
During Off Delay
Exceeded Max Recycles
EnviraCOM™ Error
Cad Cell
High During Run
Flame Proven
Late in Trial
R7284B,P,U,G ELECTRONIC OIL PRIMARY, ENVIRACOM™ ENABLED
Table 7. Display Alarm Information.
20 • Check that the manual shut off valve is open.
• Check that the burner motor is spinning and the pump is generating
adequate pressure.
• Check the condition of the nozzle and replace if necessary.
• If a valve is present, check for proper operation.
• Check burner adjustments (refer to burner manufacturers instructions)
59 • Supply voltage is low to the control.
• Measure the voltage across screw terminals "2" and "3"
— If it's greater than 22VAC and the error does not clear, replace
control.
— If it's less than 22VAC, review appliance wiring.
18, 58 • An error has been detected inside the control. Replace control if the
error persists.
34 • The cad cell is permanently in a low resistance state. It should typically
read much higher than 20,000 ohms when no flame is present.
• Set the display to display cad cell resistance.
• Shield the cad cell from light.
• If the display shows less than 20,000 ohms, unplug the cad cell,
— If display does not read 999999 ohms, replace control.
— If it does read 999999 ohms, replace cad cell.
23 • Flame was proven during the valve on delay period. Check the oil valve
for proper operation.
• If the system does not have an oil valve, set the valve on delay to 0.
24 • Flame remained lit during the burner off delay. Check the oil valve for
proper operation.
• If the system does not have an oil valve, set the burner off delay to 0.
22 • Flame was lost more than the allowed number of times. The burner
lights, but does not remain lit.
• Check that the fuel tank is not empty.
• Check the fuel supply lines (and filter) for obstructions or air
— Use the pump priming feature to purge the system of airCheck
• Check that the burner motor is spinning and the pump is generating
adequate pressure.
• If present, check operation of the oil valve.
• If the problem persists, proceed to the "Cad Cell, High During Run"
corrective action.
91 • Communications error has been detected.
• Remove all devices from the EnviraCOM™ connections, 3-pin plug
and screw terminals "1-2-3".
— If the error does not clear within one minute, measure the voltage on
terminals "2" and "3".
— If the voltage across terminals "2" and "3" is between 20VAC and
30VAC, replace control.
— If it is outside of that range, review appliance wiring. There should
be approximately 24VAC across "2" and "3".
4 • The cad cell resistance is higher than normal while running, the system
is in need of a tune up.
• Check for proper alignment of the cad cell and clean the eye if
necessary.
• Check if the pump is generating adequate pressure.
• Check burner adjustments (refer to burner manufacturers instructions).
• Check for excessive soot build up in the burner and flue.
• Check for flue blockage.
9 • The burner lit very late during the trial for ignition and is susceptible to
not lighting.
• Check cad cell for proper alignment and clean if necessary.
• Check burner adjustments (refer to burner manufacturers instructions)
• Check electrodes and spring contacts (if equipped) and adjust per
manufacturers recommendations.
• Check if the pump is generating adequate pressure.
• Check the fuel supply lines and filter for obstructions.
11 69-2467EFS—05