Hartzell CD15K - Irregular fuel pressure; Ignition (See 11.4.3.).; Fuel pressure, nozzle contamination (See 11.4.8); Combustion air blower weak or out (See 11.4.9).

2900 Selma Highway, Montgomery AL 36108 USA
PH: +1.334.386.5400 (option 2) FAX: +1.334.386.5450 WEB: www.hartzell.aero
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MM10001
Dated 1/1/08
Rev L dated 5/21/15
PROBLEM
REMEDY
Low/Intermittent Heat Output
Spark plug – Do not sand blast!
Ignition unit trouble (See 11.4.4 or 11.4.5).
Air flow switch erratic (See 11.4.2)
Fuel pressure (See 11.4.8) or nozzle contamination
Low Heat at High Altitude
Ignition or spark plug needs replacing (See 11.4.3).
Irregular fuel pressure
Low Heat In Flight
See Heater Accessories Section 11.4.4, 11.4.5, 11.4.8 and Heat output
section of this table.
Heater Operates On Ground,
Not In Flight (Goes Out When
Speed Increases)
Spark plug – Wipe down with Methyl Ethyl Ketone (M.E.K.) or
cleaning solvent. Look for carbon trekking along amber colored
insulation inside lead end of plug. Do not sandblast
Ignition (See 11.4.3.).
Fuel pressure, nozzle contamination (See 11.4.8)
Heater Operates In Flight But
Not On Ground
Combustion air blower weak or out (See 11.4.9).
Heater Continues To Heat –
Fails To Shut Off.
Fuel solenoid on heater stuck open (See 11.4.6).