Autoterm / Planar AIR (2D/4D/8D/9D) error code 17
Faulty fuel pump (PU-5: 7 blinks)
What to check, and in what order, is in the app. The flow Diesel Air Heater — Won't Start / Lockout (glow vs fuel) walks this code step by step with the pass/fail measurements, wiring schematics and procedures that go with it, and it works offline in the bay.
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- Autoterm AIR fault-code table + AIR Repair Manual + PU-5 Operation Manual v2025Autoterm
- Autoterm AIR User's Manual with installation instructions v12.2018-1 (PLANAR series)
Related codes
- 12Shut down - overvoltage more than 30V (24V) or more than 16V (12V)…
- 15Shut down - low voltage, less than 20V (24V) or less than 10V (12V)…
- 13The heater does not start - two automatic start attempts failed…
- 16During the purge time, temperature sensor was not cooled down; time…
- 20Heater does not start (PU-5: 8 blinks)
- 27Motor does not rotate (PU-5: 11 blinks)
- 28Motor rotates, speed is not regulated (PU-5: 11 blinks …
- 08/29Flame failure during operation of the heater (PU-5: 3 blinks)