WTT Fault Codes
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Revision as of 22:28, 22 February 2016 by Martin (talk | contribs) (New page: These are the fault codes reported by Webasto Thermo Test. Depending on the version, the fault code may be reported in this format: 3Ah (i.e. ending in an 'h' instead of starting '0x...)
These are the fault codes reported by Webasto Thermo Test.
Depending on the version, the fault code may be reported in this format: 3Ah (i.e. ending in an 'h' instead of starting '0x'. To convert to the format given here, remove the 'h' and add '0x' at the start - so 3Ah is equivalent to 0x3A on this list.
List kindly supplied by alex_pescaru.
| Code (Hex) | Description |
|---|---|
| 0x01 | Defective control unit |
| 0x02 | No start |
| 0x03 | Flame failure |
| 0x04 | Supply voltage too high |
| 0x05 | Flame was detected prior to combustion |
| 0x06 | Heating unit overheated |
| 0x07 | Heating unit interlocked |
| 0x08 | Metering pump short circuit |
| 0x09 | Combustion air fan short circuit |
| 0x0A | Glow plug/flame monitor short circuit |
| 0x0B | Circulation pump short circuit |
| 0x0C | No communication to air condition |
| 0x0D | Green LED short circuit |
| 0x0E | Yellow LED short circuit |
| 0x0F | No configuration signal |
| 0x10 | Solenoid valve short circuit |
| 0x11 | ECU wrong coded |
| 0x12 | W-Bus communication failure |
| 0x13 | Vehicle fan relay short circuit |
| 0x14 | Temperature sensor short circuit |
| 0x15 | Combustion air fan blocked |
| 0x16 | Battery main switch short circuit |
| 0x17 | Invalid air flow reduction |
| 0x19 | Glow plug/electronic ignition short circuit |
| 0x1A | Flame sensor short circuit |
| 0x1B | Overheat short circuit |
| 0x1D | Solenoid valve shed test short circuit |
| 0x1E | Fuel sensor short circuit |
| 0x1F | Nozzle stock heating short circuit |
| 0x20 | Operation indicator short circuit |
| 0x21 | Flame indicator short circuit |
| 0x22 | Reference resistance wrong |
| 0x23 | Crash interlock activated |
| 0x24 | Car is almost out of fuel |
| 0x25 | Fuel pre heating short circuit |
| 0x26 | PCB temperature sensor short circuit |
| 0x27 | Ground contact to the ECU broken |
| 0x28 | Board net energy manager low power voltage |
| 0x29 | Fuel priming still not done |
| 0x2A | Error in the radio telegram |
| 0x2B | Telestart still not programmed |
| 0x2C | The pressure sensor has short circuit |
| 0x32 | No start from control idle period |
| 0x33 | Flame monitor signal invalid |
| 0x34 | Default values entered |
| 0x35 | EOL programming has not been carried out |
| 0x36 | Thermal fuse short circuit |
| 0x45 | Error relay box (short circuit/open circuit of heating relay) |
| 0x50 | User interface idle-Mode (no-communication) |
| 0x51 | User interface has communication fault |
| 0x52 | User interface send no defined operating mode |
| 0x53 | Heater fan status message negative |
| 0x54 | Heater fan status bus has short circuit to UB |
| 0x55 | Temperature water sensor failure |
| 0x56 | Temperature water sensor short circuit to UB |
| 0x57 | Overheating water temperature sensor |
| 0x58 | Overstepping water temperature sensor gradient |
| 0x59 | Overheating blow temperature sensor |
| 0x5A | Overstepping low temperature sensor gradient |
| 0x5B | Overheating printed circuit board temperature sensor |
| 0x5C | Overstepping printed circuit board temp sensor gradient |
| 0x5D | Cabin temperature sensor failure |
| 0x5E | Flame detector gradient failure |
| 0x5F | Emergency cooling |
| 0x81 | EOL checksum error |
| 0x82 | No start during test-run |
| 0x83 | Flame failure |
| 0x84 | Operating voltage too low |
| 0x85 | Flame was detected after combustion |
| 0x87 | Heater lock-out permanent |
| 0x88 | Fuel pump failure |
| 0x89 | Combustion air fan interruption |
| 0x8A | Glow plug / flame monitor interruption |
| 0x8B | Circulation pump interruption |
| 0x8D | Green LED interruption |
| 0x8E | Yellow LED interruption |
| 0x90 | Solenoid valve interruption |
| 0x91 | Control unit locked or coded as neutral |
| 0x92 | Command refresh failure |
| 0x94 | Temperature sensor interruption |
| 0x95 | Combustion air fan tight |
| 0x97 | Overheat sensor position wrong |
| 0x98 | Fault 152 (Power supply interruption) |
| 0x99 | Glow plug / electronic ignition unit interruption |
| 0x9A | Flame sensor interruption |
| 0x9B | Setpoint transmitter invalid |
| 0x9C | Intelligent undervoltage detection |
| 0x9D | Solenoid valve shed test interruption |
| 0x9E | Fuel sensor interruption |
| 0x9F | Nozzle stock heating interruption |
| 0xA0 | Operating indicator interruption |
| 0xA1 | Flame indicator interruption |
| 0xA5 | Fuel pre heating interruption |
| 0xA6 | PCB temperature sensor interruption |
| 0xA8 | Communication board net energy manager error |
| 0xAA | Send on W-Bus not succeed |
| 0xAB | Overheat sensor interruption |
| 0xAC | The pressure sensor failure |
| 0xB6 | Thermal fuse interrupted |
| 0xFF | Unknown error code |
