Honeywell R7184A Series Quick Start Manual page 9

R7184A,B,P,U SERIES 5 INTERRUPTED ELECTRONIC OIL PRIMARY, ENVIRACOM™ ENABLED
External Action
Power applied to control.
Thermostat or Aquastat® Control
calls for heat.
Call for heat is satisfied.
Reset Button pushed two times
without device completing a call
for heat.
Procedure
Condition: Burner does not start with a call for heat.
1. Check that limit switches are closed
and contacts are clean.
2. Check for line voltage power at the
oil primary control. Voltage should be
120 Vac.
3. Check indicator light with burner off,
no call for heat (no flame).
Table 4. R7184 Operation.
Internal safety check conducted. If no light or flame is detected and all internal
conditions are correct, control enters Idle Mode.
1. Shorts across T-T terminals (on a call for heat) in warm air system and/or
provides power to limit terminals in hydronic system. Systems with
EnviraCOM™ network may receive a call for heat on network connections 1,
2, 3.
2. Safety Period (5 seconds) internal and external check for flame or light. If
flame or light is detected, control remains in the Idle Mode.
3. When flame or light is not present:
a. R7184A,U (if valve-on delay is enabled) will apply power to the burner
motor and ignitor.
b. R7184B,P,U (if valve-on delay is enabled) will apply power to the burner
motor and ignitor, enter/complete valve-on delay period and then apply
power to the valve.
4. Control enters Trial for Ignition period.
a. Monitors burner for flame.
b. When flame is not detected:
(1) Enters lockout mode (after lockout time of 15, 30, or 45 seconds).
(2) Shuts off valve, ignitor and burner motor.
(3) Flashes indicator light at 1/2 second on, 1/2 second off.
(4) Depress reset button to return to power-up sequence.
c. When flame is detected, Carry-Over period begins:
5. Control enters Ignition Carry-Over period (continues to spark for 10 to 30
seconds.
a. Turns on indicator light.
b. If flame is lost and lockout time has not expired, R7184 returns to Trial for
Ignition period.
c. If flame is lost and lockout time has expired, R7184 enters Recycle Mode.
6. Carry-Over time expires; ignitor turns off.
7. Enters Run Mode:
a. Flame is monitored until call for heat ends or flame is lost. If flame is lost:
(1) Control enters Recycle Mode.
(2) Recycle time starts (60 seconds).
(3) Burner and valve are turned off.
(4) Indicator light flashes at 2 seconds on, 2 seconds off.
(5) Returns to Idle Mode at end of Recycle Mode.
1. R7184A,U (if burner motor-off delay is disabled):
a. Burner motor and oil valve shut off.
b. Indicator light turns off.
2. R7184B,P,U (if burner motor-off delay is enabled):
a. Oil valve shuts off.
b. Burner motor runs for selected burner motor-off delay time.
c. Burner motor turns off.
d. Device returns to Idle Mode.
1. R7184 enters Restricted Mode.
2. Indicator light flashes and 1/2 second on, 1/2 second off.
3. Reset device by pressing and holding reset button for a minimum of 30
seconds.
Table 5. Troubleshooting Information .
Status
—
—
Indicator light is on. Cad cell or controller is defective, sees external light
R7184 Action
a
Corrective Actions
—
—
or connections are shorted. Go to step 4.
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