Troubleshooting - Honeywell R7184A Installation Instructions Manual

R7184A,B,P,U INTERRUPTED ELECTRONIC OIL PRIMARY
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
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).
69-1233—2
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 as call for heat) in warm air system and/or
provides power to limit terminals in hydronic system.
2. Safety Period (4 seconds) internal and external check for flame or light. If flame or
light is detected, control remains in Idle mode.
3. When flame or light is not present:
a. R7184A,U (if valve-on delay is disabled) 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 Hz (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 1/4 Hz (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.
c. Burner motor turns off.
d. Device returns to Idle mode.
1. R7184 enters Restricted mode.
2. Indicator light flashes at 1Hz (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 .
Condition: Burner does not start with a call for heat.
—
—
Indicator light is on.
Indicator light is off.
R7184 Action
Status
—
—
Cad cell or controller is defective, sees external light
or connections are shorted. Go to step 4.
Go to step 5.
6
Corrective Actions