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HEATFAST HF45K - User Manual

HEATFAST HF45K
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853556-1802i
®
HF45K / HF75K / HF125K / HF175K / HF215K
A Subsidiary of U.S. Stove Company
227
Industrial Dr., South Pittsburg, TN
PH: (423) 837-5155
www.powerfastproducts.com
READ AND SAVE THESE INSTRUCTIONS
Carefully read and understand these instrucons before assembling, operang, or servicing this heater. You may injure
yourself or others if you do not follow the instrucons. This manual has been designed to instruct you on the proper
manner in which to assemble, maintain, store, and most importantly, how to operate the heater in a safe and ecient
manner. Do not allow anyone who has not read these instrucons to assemble, light, adjust or operate the heater.
U. S. RESIDENTS:
THE INSTALLATION OF THIS HEATER SHALL BE
IN ACCORDANCE WITH THE REGULATION OF
AUTHORITIES HAVING JURISDICTION AND NFPA 31
CANADIAN RESIDENTS:
THIS HEATER SHALL BE OPERATED IN ACCORDANCE
WITH THE REGULATION OF AUTHORITIES HAVING
JURISDICTION AND CSA STANDARD B139.


Not for Use in Living Areas • Suitable for Outdoor Use
Oil Fired Forced Air
Construction Heater
CALIFORNIA PROPOSITION 65 WARNING:
This product can expose you to chemicals including carbon monoxide, which is known to the State of California to cause
cancer, birth defects and/or other reproducve harm. For more informaon, go to www.P65warnings.ca.gov
DANGER:
THIS HEATER IS DESIGNED AND INTENDED FOR SPACE-HEATING OF BUILDINGS UNDER CONSTRUCTION AND
FOR SPOT HEATING WHEN THE PRODUCTS OF COMBUSTION ARE DISCHARGED OUTDOORS.

Questions and Answers

  • J
    James HesterAug 12, 2025
    What to do if HEATFAST HF45K shows E1 error?
    • J
      Jennifer BrownAug 12, 2025
      If your HEATFAST Heater displays error code E1, it could be due to several reasons: * **Oil Shortage:** Charge fuel or fill if needed. * **Bad Photocell (Flame Sensor):** Check, clean, or replace the Photocell (Flame Sensor). * **Incomplete Combustion:** Ensure you are using the designated fuel. * **Contamination of Fuel Filter:** Clean or replace the fuel filter. * **Ignition Failure:** Check the wire connection. * **Spark Plug Issues:** Check the spark plug for normal firing; clean or replace if needed.
  • M
    Michael WrightAug 19, 2025
    What to do if my HEATFAST Heater is blinking?
    • K
      kristysimmonsAug 19, 2025
      If your HEATFAST Heater is blinking, you should first check the error code and then reset to restart the device.
  • G
    gmorganAug 27, 2025
    What to do if HEATFAST HF45K displays E2 error?
    • S
      Sandra Alexander MDAug 27, 2025
      If your HEATFAST Heater is showing an E2 error, it could be due to a bad connection or sensor error. Check the wire connection. If that doesn't resolve the issue, replace the sensor.
  • M
    melaniestewartSep 3, 2025
    What to do if HEATFAST HF45K displays OH?
    • E
      ebeardSep 3, 2025
      If your HEATFAST Heater displays 'OH', restart it after it has cooled down.

HEATFAST HF45K Specifications

General IconGeneral
ThermostatNo
Cord Length6 ft
BTU45, 000 BTU
Fuel TypeKerosene
Power120V / 60 Hz / 1 Phase, 1.3 Amps
Safety FeaturesOverheat Shut-off