AD83.70-W-6000-47A | AHE test of electrical system flame monitor and temperature sensor open circuit |
| Scope of test | Measuring instrument/ Test connection | Operation/Requirement | Specified value | Possible cause/Remedy | ||
1.0 | Flame monitor –//– Temperature sensor –//– Ground connection |
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| FF8 14/8 | Ignition: OFF Heater unit: OFF Connect short-circuit bridge to plug connection FF8 under electrical compartment and ground. Ignition: ON Erase fault memory Heater unit: ON Ensure good ground connection. | If no fault code appears: Inspect plug connections / ground cable from electrical compartment to control unit (Z14) and repair, fit new cable if necessary (1 mm2, green). If fault codes and re-appear: 1.1 | |
1.1 | Flame monitor –//– Temperature sensor –//– Ground connection |
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| G 14/8 | Ignition: OFF Heater unit: OFF Connect short-circuit bridge to plug connection G under air recirculation box and ground. Ignition: ON Erase fault memory. Heater unit: ON Ensure good ground connection. | If no fault code appears: Repair cable to electrical compartment (1 mm2, green). If fault codes and re-appear: Inspect plug connection on heater unit, if no visible fault: 1.2 | |
1.2 | Flame monitor –//– Temperature sensor –//– Supply cable |
A1 | Z14 |
E2 | Ignition: OFF Heater unit: OFF Remove bridge on plug connection under electrical compartment. Carry out measurement at connection plug A and connection plug E on control unit. | Value > 20 Ω: Replace control unit (Z14) on trial. Value < 5 Ω: | |