Marantec 116422 Control Box for Synergy 300 Series Operators
The Marantec 116422 control box is the primary electronic control component used in the Synergy 300 Series operator family. It controls how the opener starts, stops, reverses, reads safety circuits, responds to wall controls and radio commands, and manages lighting. If the control box has failed, the opener may lose normal command response, produce intermittent operation, show error behavior, or stop powering connected low-voltage devices.
Fitment must be checked carefully because Marantec Synergy control boxes are not all the same. The 116422 number is commonly tied to Synergy 360, Synergy 370, and Synergy 380 openers, while Synergy 260, 270, and 280 typically use the 116421 family and Synergy Solo uses 122943. Connector layout, firmware/generation, and accessory wiring should be compared before replacement. Any external wiring fault should be corrected before installing a new control box.
Compatible With
- Marantec Synergy 360 garage door operators
- Marantec Synergy 370 garage door operators
- Marantec Synergy 380 garage door operators
- Select Marantec Synergy 300 Series opener heads that originally used control box 116422
- Residential sectional-door opener applications with the matching Synergy 300 control layout
- Not intended for Synergy 260, 270, 280, Synergy Solo, M-Line, Q-Line, or EOS operators unless documentation confirms 116422
Features and Specifications
| Manufacturer | Marantec |
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| Product Type | Control box / logic control assembly |
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| Part Number | 116422 |
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| Application | Control electronics for select Synergy 300 Series operators |
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| Compatible Operator Type | Residential Marantec garage door openers |
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| Common Models | Synergy 360, Synergy 370, Synergy 380 |
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| Supported Circuits | Motor control, wall control, remote/accessory input, light and safety circuits as supported by the opener |
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| Programming Notes | Setup checks and accessory programming may be required after replacement |
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| Notes | Match by original label and connector layout |
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Also Known As / Related Part Numbers
- 116422
- MAR-116422
- Marantec 116422
- 116422 control box
- Synergy 300 control box
- Synergy 360 control box
- Synergy 370 control box
- Synergy 380 control box
- Related but different: 116421 Synergy 200 control box, 122943 Synergy Solo control box
Technician Note
Before condemning the control box, check outlet power, transformer output, low-voltage accessory wiring, safety sensor alignment, and any evidence of surge damage. External shorts can damage a new control box if not corrected first.
Before Ordering Checklist
- Confirm the opener is Synergy 360, 370, or 380
- Match the original control box label to 116422
- Compare terminal markings and connector layout
- Inspect photo eye, wall control, and accessory wiring for shorts
- Perform travel, force, safety reversal, and remote programming checks after replacement
Professional Advisory
Control box replacement should not be used to defeat safety monitoring or closing protection. If the door reverses, will not close, or has safety errors, diagnose and repair the safety circuit instead of bypassing it.
Important Ordering Warnings
- 116422 is not interchangeable with the 116421 Synergy 200 control box.
- Moisture or surge damage should be corrected before installing a replacement control box.
Product Questions and Answers
Which Marantec models commonly use 116422?
The 116422 control box is commonly used on Synergy 360, Synergy 370, and Synergy 380 garage door openers.
Is 116422 the same as 116421?
No. 116422 is tied to Synergy 300 Series models, while 116421 is tied to Synergy 200 Series models.
What does the control box do?
It manages motor operation, opener logic, wall controls, radio inputs, lighting, and safety circuits supported by the opener.
Will remotes need to be reprogrammed after replacement?
Remote and accessory programming may need to be checked or repeated after a control box replacement.
Can a failed photo eye make the control box seem bad?
Yes. Bad sensor wiring, misalignment, or accessory shorts can cause control problems. Check safety circuits before replacing the control box.
