1. Introduction
This manual provides detailed instructions for the proper installation, operation, and maintenance of the RAM-H4M1-03 Ignition Module. This module is designed for compatibility with Bakers Pride Ovens. Please read this manual thoroughly before attempting any installation or service to ensure safe and efficient operation.
2. Safety Information
WARNING: Risk of electric shock and gas leak. Improper installation, adjustment, alteration, service, or maintenance can cause property damage, injury, or death. Read the installation, operating, and maintenance instructions thoroughly before installing or servicing this equipment.
- Always disconnect power to the oven before installing, servicing, or removing the ignition module.
- Installation and service must be performed by a qualified, licensed technician.
- Ensure all gas connections are properly sealed and tested for leaks after installation.
- Do not operate the oven if any part is submerged in water.
- Replace only with identical RAM-H4M1-03 components or approved equivalents.
3. Product Overview
The RAM-H4M1-03 is an ignition control module designed to manage the ignition sequence in compatible Bakers Pride Ovens. It ensures reliable and safe operation of the oven's burner system. This module features a timer function and is built for durability.

Figure 1: RAM-H4M1-03 Ignition Module. This image displays the grey ignition module with its label showing model number RAM-H4M1-03, input voltage, current draw, temperature range, and contact ratings. It also indicates "ASSEMBLED IN MEXICO" and features safety certifications (CSA, UL).
4. Setup and Installation
Installation of the RAM-H4M1-03 Ignition Module should only be performed by a qualified service technician. Refer to the oven manufacturer's service manual for specific wiring diagrams and procedures for your Bakers Pride Oven model.
4.1 Pre-Installation Steps
- Power Disconnection: Turn off all electrical power to the oven at the main circuit breaker or fuse box.
- Gas Shut-off: Close the main gas supply valve to the oven.
- Access: Gain access to the existing ignition module within the oven's control compartment.
- Verification: Confirm that the replacement module, RAM-H4M1-03, is the correct part for your oven model.
4.2 Removal of Old Module
- Carefully disconnect all wiring harnesses and gas lines (if applicable) from the old module, noting their positions for reinstallation.
- Unmount the old module from its bracket or mounting screws.
4.3 Installation of New Module
- Mount the new RAM-H4M1-03 module securely in the same location as the old module.
- Reconnect all wiring harnesses to their corresponding terminals on the new module. Ensure connections are tight and correct according to the oven's wiring diagram.
- Reconnect any gas lines if they were disconnected, ensuring proper sealing.
4.4 Post-Installation Checks
- Gas Leak Test: After reconnecting gas lines, perform a gas leak test using a soap solution. Do not use an open flame.
- Wiring Check: Double-check all electrical connections for security and correctness.
- Power Restoration: Restore electrical power and gas supply to the oven.
- Test Operation: Initiate an oven cycle to verify proper ignition and operation of the burner. Observe the ignition sequence for any anomalies.
5. Operating Instructions
The RAM-H4M1-03 Ignition Module operates automatically as part of the oven's control system. Once installed and the oven is powered on, the module will initiate the ignition sequence when a call for heat is detected from the oven's thermostat.
- When the oven thermostat calls for heat, the ignition module sends a signal to open the gas valve and simultaneously generates a spark to ignite the gas.
- A flame sensor monitors the presence of a flame. If a flame is not detected within a specified time (lockout time), the module will shut off the gas supply for safety.
- The module's timer function manages the ignition trial and lockout sequence.
Refer to your specific Bakers Pride Oven user manual for general oven operation procedures.
6. Maintenance
The RAM-H4M1-03 Ignition Module itself is a sealed unit and does not require routine user maintenance. However, regular maintenance of the overall oven system is crucial for its longevity and proper function.
- Annual Inspection: Have a qualified technician inspect the entire oven system annually, including the ignition system, gas lines, and electrical connections.
- Cleanliness: Ensure the area around the ignition module and burner assembly is kept clean and free from debris, grease, or obstructions that could interfere with operation or airflow.
- Component Check: During oven maintenance, technicians should check for any signs of wear, corrosion, or damage to the module's wiring or housing.
7. Troubleshooting
This section provides general troubleshooting tips. For complex issues, always consult a qualified service technician.
| Problem | Possible Cause | Solution |
|---|---|---|
| Oven does not ignite. | No power to the module. Gas supply off. Faulty igniter or flame sensor. Module failure. | Check circuit breaker/fuse. Ensure gas valve is open. Inspect/replace igniter or sensor. Consult technician for module diagnosis. |
| Burner ignites then immediately shuts off. | Flame sensor dirty or faulty. Poor ground connection. Insufficient gas pressure. | Clean or replace flame sensor. Check all ground connections. Verify gas pressure with technician. |
| Intermittent ignition. | Loose wiring connections. Drafts affecting flame. Weak spark. | Check and secure all wiring. Ensure proper ventilation. Inspect igniter and wiring. |
If troubleshooting steps do not resolve the issue, contact a qualified service technician for further assistance.
8. Specifications
- Model: RAM-H4M1-03
- Brand: RAM
- Input Voltage: 24VAC, 50/60Hz (as per image label)
- Current Draw: 0.3A (as per image label)
- Ambient Temperature Range: -40°F to +175°F (as per image label)
- Relay Contact Rating: 2.0A max (as per image label)
- Ignition Lockout Time: Safety Switch (as per image label)
- Special Features: Timer Function Available
- Color: Grey
- ASIN: B078TPV86L
9. Warranty and Support
For warranty information, please refer to the documentation provided with your purchase or contact the seller directly. RAM products are designed for reliability, and support is available through authorized distributors and service centers.
If you require technical assistance or have questions regarding the RAM-H4M1-03 Ignition Module, please contact your supplier or a qualified HVAC/oven technician.
For general inquiries, you may visit the RAM Store on Amazon.





