Dometic ProHeat X30 Standard PCM
The Dometic ProHeat 305520K PCM is the standard replacement control module for compatible ProHeat X30 diesel-fired coolant heaters.
As the heater’s electronic control module, the PCM is part of the X30’s intelligent control system. The X30 platform uses adaptive controls, sensor feedback, and J1939 CAN Bus communication to manage heater operation and monitor system performance.
Use 305520K when replacing the standard PCM in an applicable X30 heater. Always verify the existing PCM part number and heater application before ordering.
Key Features
- Genuine Dometic ProHeat replacement component
- Factory part number 305520K
- Standard PCM for ProHeat X30 coolant heaters
- Replacement electronic heater control module
- Designed for the X30 intelligent control system
- Supports X30 diagnostic and control functions
- Used within the X30 J1939 CAN Bus system
- Serviceable with ProHeat diagnostic software
ProHeat continues to support X30 PCM diagnostics through its Datalink software platform, with Datalink Rev. 22 listed for the X30 as of April 2026.
Compatibility
Manufacturer: Dometic ProHeat
ProHeat Part Number: 305520K
BTRAC Part Number: PH-305520K
Product Type: PCM / Electronic Control Module
Heater Family: ProHeat X30
Configuration: Standard
The official ProHeat X30 parts catalog identifies 305520K as “PCM, X30, Standard.”
Important Compatibility Note
The 305520K Standard PCM should not be used in Transit Bus or Motor Coach applications that require application-specific PCM software.
ProHeat lists separate modules for several OEM applications:
- 305112K – X30 PCM, Nova Bus Specific
- 305114K – X30 PCM, New Flyer Specific
- 305145K – X30 PCM, Gillig Specific
Verify the heater application and existing PCM part number before ordering a replacement.
Related X30 PCM Components
The ProHeat parts catalog lists several components associated with the X30 PCM assembly separately, including:
- 305575K – X30 PCM Cover
- 305527K – Strain Relief / Tie Strap with Screw
- 149021K – M6 × 1 × 16 Screw Package
- 850375K – M6 × 1 × 25 Screw Package
- 305547K – M6 × 12 Washer Package
These components are shown separately in the factory parts catalog and should not be assumed to be included with the 305520K PCM unless specifically stated with the product being purchased.
Installation Notes
Electronic control module replacement should be performed according to the appropriate ProHeat X30 service procedures.
Before installation:
- Confirm the existing PCM part number
- Verify the heater is a standard X30 application
- Confirm the vehicle does not require OEM-specific PCM software
- Disconnect vehicle power before servicing the heater
- Inspect electrical connectors and wiring for damage before installing the replacement module
For Transit Bus, Motor Coach, or other specialized applications, confirm the required PCM configuration before ordering.
Product Specifications
- BTRAC SKU: PH-305520K
- Manufacturer: Dometic ProHeat
- Manufacturer Part Number: 305520K
- Product: Standard PCM
- Component Type: Electronic heater control module
- Compatible Heater: ProHeat X30
- Configuration: Standard
- Communication Platform: J1939 CAN Bus
- Application: Replacement/service component
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