Dometic ProHeat X45 24V Blower Assembly
The Dometic ProHeat 980224K Blower Assembly is the factory 24-volt replacement combustion blower used in ProHeat X45 and X45 Plus diesel-fired coolant heaters.
The blower supplies the combustion airflow needed for proper heater operation. ProHeat’s control system monitors blower performance and speed to ensure enough air is being supplied to maintain combustion.
The factory X45 Plus parts catalog identifies 980224K as the 24V blower supplied complete with the gasket and fan blade.
Key Features
- Genuine Dometic ProHeat replacement component
- Factory part number 980224K
- Designed for ProHeat X45
- Designed for ProHeat X45 Plus
- 24V blower assembly
- Supplies combustion air to the heater
- Includes blower gasket
- Includes fan blade
- Monitored by the ProHeat heater control system
- Direct replacement/service assembly
What Is Included
ProHeat lists 980224K as:
Blower, 24V c/w Gasket & Fan Blade
The complete assembly includes:
- 24V blower motor assembly
- Blower gasket
- Fan blade
The same factory catalog lists the related components separately as:
- 964424K – Blower Gasket
- 900316K – Fan Blade with Glue
Those parts do not need to be purchased separately when replacing the complete 980224K blower assembly.
Compatibility
- Manufacturer: Dometic ProHeat
- ProHeat Part Number: 980224K
- BTRAC Part Number: PH-980224K
- Product Type: Blower Assembly
- Voltage: 24V
- Compatible Heater: ProHeat X45
- Compatible Heater: ProHeat X45 Plus
- System: Combustion Air / Fan End
The X45 Plus factory catalog lists both voltage-specific blower assemblies in the same fan-end assembly:
- 980212K – 12V Blower
- 980224K – 24V Blower
Need the 12V Version?
For 12V X45 and X45 Plus heaters, use:
PH-980212K – Dometic ProHeat X45/X45 Plus 12V Blower Assembly
Always verify heater voltage before ordering.
Blower Monitoring and Diagnostics
The ProHeat control system electronically monitors blower operation.
The PCM measures blower RPM and can generate a fault if blower speed drops below the level needed to maintain sufficient combustion air. ProHeat identifies the blower under Diagnostic Code 12 in the X45 service documentation.
Possible causes of a blower-related fault include:
- Failed blower motor
- Open electrical circuit
- Short circuit
- Damaged wiring or connectors
- Insufficient blower speed
- Fan blade rubbing against the housing
- Fan blade slipping on the motor shaft
ProHeat recommends checking blower wiring and operation before condemning the control module.
24V Electrical Specification
For the 24V X45 blower, ProHeat specifies a normal current draw of:
0.5–1.0 amps at 24 volts
This specification can help technicians evaluate blower condition during troubleshooting.
Combustion Chamber Inspection
If the blower has failed, ProHeat recommends inspecting the combustion chamber for carbon buildup.
Insufficient combustion airflow can contribute to soot or carbon accumulation. Any deposits should be cleaned as necessary before returning the heater to service.
Blower Inlet Inspection
The surrounding fan-end assembly also uses:
964321K – Blower Inlet Screen Kit
When servicing the blower, inspect the inlet screen and surrounding air path for dirt, debris, or restriction that could reduce airflow. The inlet screen is sold separately.
Installation Notes
Before replacing the blower:
- Shut the heater down completely
- Allow the heater to complete its cool-down cycle
- Disconnect battery power before electrical service
- Confirm the heater is a 24V system
- Inspect the blower wiring and connector
- Inspect the blower inlet screen for restriction or contamination
- Inspect the combustion chamber if the existing blower failed
- Confirm the fan blade rotates freely after installation
- Reinstall all protective covers before operating the heater
- Test heater startup and blower operation after installation
ProHeat specifically instructs technicians to disconnect the batteries before electrical service and to reinstall protective covers before operation.
Product Specifications
- BTRAC SKU: PH-980224K
- Manufacturer: Dometic ProHeat
- Manufacturer Part Number: 980224K
- Product Type: Blower Assembly
- Voltage: 24V
- Compatible Heater: ProHeat X45
- Compatible Heater: ProHeat X45 Plus
- System: Combustion Air / Fan End
- Normal Current Draw: 0.5–1.0A @ 24V
- Fan Blade Included: Yes
- Blower Gasket Included: Yes
- Application: Replacement / service component
Related ProHeat Parts
- PH-980212K – X45/X45 Plus 12V Blower Assembly
- PH-964424K – Blower Gasket
- PH-900316K – Fan Blade with Glue
- PH-964321K – Blower Inlet Screen Kit
- PH-954329K – Flame Sensor
- PH-951126K – Fuel Regulator
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