The Mitsubishi 3.9L is a 3.9 L engine. It powers generator sets from Generac, including the QT 40kW.
Also known as: Mitsubishi 3.9L, 3.9L
| Displacement | 3.9 L |
|---|
| Code | Meaning |
|---|---|
| L3 | Circulation water temperature overheat protection |
| L4 | DHW tank water temperature overheat protection |
| L5 | Indoor unit temperature thermistor (THW1, THW2, THW5A, THW5B, THW6, THW7, THW8, THW9) failure |
| L6 | Circulation water freeze protection |
| L8 | Heating operation error |
| L9 | Low primary circuit flow rate detected by flow sensor or flow switch (flow switches 1, 2, 3) |
| LA | Pressure sensor failure |
| LB | High pressure protection |
| LC | Boiler circulation water temperature overheat protection |
Fault codes and symptom→remedy steps extracted from this engine’s service/owner documentation; verify against the official manual before servicing.
The Mitsubishi 3.9L has a displacement of 3.9 liters.
The Mitsubishi 3.9L powers 1 generator set(s), including Generac QT 40kW.