The R-200A is a generator-set controller. It is used on generator sets from Generac, including the 30k.
| Code | Meaning | Remedy |
|---|---|---|
| 1 | Engine won’t crank. | 1. Replace fuse. 2. Tighten, clean or replace battery cables as necessary. 3. Replace contactor.* 4. Replace starter motor.* 5. Remove, change or replace battery. 6. Replace fuse.* |
| 10 | Defective Low Coolant Level Switch | |
| 11 | AUTO/OFF/MANUAL Switch at OFF, engine continues to run. | |
| 12 | No AC output from generator. | |
| 2 | Engine cranks but won't start | 1. Replenish fuel. 2. Replace solenoid.* 3. Reconnect wire. 4. Clean, regap or replace plugs. 5. Close door on tank. |
| 3 | Engine starts hard, runs rough. | |
| 4 | Engine oil level is low. | |
| 5 | Engine is overheated. | |
| 6 | Defective Low Oil Pressure Switch | |
| 7 | Defective Coolant Temperature Switch | |
| 8 | Defective Control Module circuit board | |
| 9 | Coolant Level is Low. |
| Symptom | Cause | Remedy |
|---|---|---|
| Circuit breaker or fuse is not reset or faulty. | No AC output from generator. | 1. Check main line circuit breaker. 2. Check circuit breaker & fuses. 3. Transfer switch set to NORMAL position 4. Generator internal failure. 5. Thermal circuit breaker open. |
| Coolant Level is Low. | 1. Engine starts hard, runs rough. | Repair leak - Add coolant. |
| Defective AUTO/OFF/MANUAL switch | 1. Engine starts then shuts down. AUTO/OFF/MANUAL Switch at OFF, engine continues to run. | Replace switch.* |
| Defective Control Module circuit board | 1. Engine starts hard, runs rough. | Replace board.* |
| Defective Coolant Temperature Switch | 1. Engine starts hard, runs rough. | Replace switch.* |
| Defective Low Oil Pressure Switch | 1. Engine starts hard, runs rough. | Replace switch.* |
| Engine cranks but won't start | 1. Out of fuel. 2. Fuel solenoid (FS) is defective 3. Open Wire #14A from Engine Control circuit board. 4. Spark plugs defective. 5. Door on tank not closed. | 1. Replenish fuel. 2. Replace solenoid.* 3. Reconnect wire. 4. Clean, regap or replace plugs. 5. Close door on tank. |
| Engine is overheated. | 1. Engine starts hard, runs rough. | Check cooling system for leaks. |
| Engine oil level is low. | 1. Engine starts hard, runs rough. | Check oil and add oil as needed. |
| Engine starts hard, runs rough. | 1. Flame arrestor (air cleaner) plugged or damaged. 2. Plugged fuel line. 3. Defective spark plugs. 4. Fuel pressure incorrect. | 1. Clean or replace as needed. 2. Unclog fuel line. 3. Clean, regap or replace plugs. 4. Confirm fuel pressure to regulator is as recommended in SPECIFICATIONS. |
| Engine won’t crank. | 1. 15 amp fuse blown. 2. Loose or corroded or defective battery cables. 3. Defective starter contactor. 4. Defective starter motor. 5. Dead or Defective Battery. 6. 5 amp fuse blown. | 1. Replace fuse. 2. Tighten, clean or replace battery cables as necessary. 3. Replace contactor.* 4. Replace starter motor.* 5. Remove, change or replace battery. 6. Replace fuse.* |
| Generator internal failure. | No AC output from generator. | * |
| Main line circuit breaker is not reset or faulty. | No AC output from generator. | 1. Check main line circuit breaker. 2. Check circuit breaker & fuses. 3. Transfer switch set to NORMAL position 4. Generator internal failure. 5. Thermal circuit breaker open. |
| Open/disconnected wire #15A between AUTO/OFF/MANUAL switch and Control Module circuit board. | Engine starts then shuts down. AUTO/OFF/MANUAL Switch at OFF, engine continues to run. | Reconnect/close wire. |
| Thermal circuit breaker is open. | No AC output from generator. | Auto-reset - Wait 5 min. and attempt restart. |
| Transfer switch is not in GENERATOR position. | No AC output from generator. | Set to GENERATOR position. |
Fault codes and symptom→remedy steps extracted from this controller’s service/owner documentation; verify against the official manual before servicing. Aggregated from the service documentation of generator sets built on this controller.