• Solenoid coils power the dual solenoid shutoff valves (V1 and V2) within the valve block, regulating staged fuel delivery: first-stage (low-fire) via V1, and second-stage (high-fire) via V2.
• They operate on a 2-step voltage profile: high voltage (~29–30 V DC) during ignition to ensure rapid valve actuation, then a low holding voltage (~3 V DC) during steady operation to maintain the open position with minimal power consumption.

2. Electrical Specs

• During ignition, the control box (RMO or equivalent) delivers the high voltage to swiftly open the valve, then reduces to a low holding voltage to sustain open status with minimal energy.

3. Coil Identification & Part Numbers

• One commonly-used coil part number is 3002279 (~1 500 Ω), used across several G-series burners.
• Another OEM coil for the PRESS G range is 3006714, listed as a solenoid coil oil burner coil used on GW/1G/2G/3G/4G models.

4. Integration & Maintenance

• Mounting: Installed on the valve block assembly; ensure clean mounting surfaces and intact O‑rings/gaskets.
• Wiring: Connected to the control box via dedicated terminals (e.g., “V1” and “V2”). Check for firm connections and good insulation.
• Troubleshooting:
  • If the coil is energized but oil flow does not begin, ensure high-voltage pulse is present during start—coils may stick if the initial voltage is missing.
  • Measure resistance to confirm coil integrity (compare to ~1 500 Ω). Use a multimeter on DC current to verify high/low voltage switching during start and running phases.