Fuse 11 (F11) - Fuse 11 is the fuse that is used for Phase A Generator AC Voltage (2 Amp). Fuse 11 is connected in series between the output terminal T1 of the generator and arming relay Terminal 2. If this fuse is faulty, the normally open contacts of the arming relay will not close. The optional generator running contacts will not operate when the engine is running.
Fuse 13 (F13) - Fuse 13 is a fuse for Phase C Generator AC Voltage (2 Amp). Fuse 13 is connected in series between the generator output terminal T3 and the arming relay terminal 10. If this fuse is faulty, the normally open contacts of the arming relay will not close. The optional generator running contacts will not operate when the engine starts.
Fuse 14 (F14) - Fuse 14 is the fuse for the Fuel Control Solenoid (10A). Fuse 14 is located in the junction box. Fuse 14 is connected between the battery positive terminal and the fuel control solenoid. This connection is made through the normally open contacts of the fuel control relays (one and two). If this fuse is faulty, the fuel solenoid will not work. The engine will stop running or the engine will not start.
Fuse 15 (F15) - Fuse 15 is the fuse for the Battery Charger DC Output (6 Amp) or the optional Battery Charger DC Output (10 Amp). Fuse 15 is connected in series between the positive output of the battery charger and terminal 1 (B+) of the control panel's terminal strips. This can be a 6 Amp battery charger or a 10 Amp battery charger. If this fuse is faulty, the batteries of the generator set will not be charged when the engine is not running.
Fuse 16 (F16) - Fuse 16 is the fuse for the optional Heater Contactor Coil (2 Amp). Fuse 16 is connected in series between the customer supplied auxiliary AC supply and coil terminal A1 of the heater/charger contactor. If this fuse is faulty, the following devices will not operate: engine heater (jacket or block), generator space heater and battery charger.
Fuse 17 (F17) - Fuse 17 is the fuse for the optional Battery Charger AC Input (6 Amp). Fuse 17 is connected in series between the customer supplied auxiliary AC supply and terminal 1 of the heater/charger contactor. Terminal 1 is normally open. If Fuse 17 is faulty, the battery charger will not charge the batteries of the generator set and the generator space heaters will not operate.
Fuse 18 (F18) - Fuse 18 is the fuse for the optional Generator Space Heater AC Input (2 Amp). Fuse 18 is connected in series between the customer supplied auxiliary AC supply and terminal 3 of the heater/charger contactor. Terminal 3 is normally open. If this fuse is faulty, the generator space heaters will not operate. If Fuse 18 is faulty, a 240 Volt battery charger will not charge the generator set batteries.
Fuse 19 (F19) - Fuse 19 is the fuse for the Engine Block Heater on 3412 engines (32 Amp). Fuse 19 is also the fuse (10 Amp) for the AC Input of the optional Jacket Water Heater (Number 1). Fuse 19 is connected in series between the customer supplied AC supply and terminal 5 of the heater/charger contactor. Terminal 5 is normally open. If this fuse is faulty, the engine block heater will not operate and the jacket water heater will not operate.
Fuse 20 (F20) - Fuse 20 is the fuse (10 Amp) for the AC Input of the optional Jacket Water Heater (Number 2). Fuse 20 is connected in series between the customer supplied AC supply and terminal 7 of the heater/charger contactor. Terminal 7 is normally open. If this fuse is faulty, the Jacket Water Heater will not operate.
Note: On some packages, fuses F19 and F20 may have been replaced by MCB1. MCB1 is a double-pole circuit breaker (32 ampere).
Fuse 21 (F21) - Fuse 21 is the fuse for the optional Transfer Pump (6 Amp). Fuse 21 is connected in series between the customer supplied AC supply and terminal 1 of the transfer pump contactor. Terminal 1 is normally open. If this fuse is faulty, the AC fuel transfer pump will not operate.
Fuse 22 (F22) - Fuse 22 is the fuse for the optional AC Transfer Pump Contactor Coil (2 Amp). Fuse 22 is connected in series between the customer supplied AC supply and the pump stop switch. The contacts of the pump stop switch are normally closed. If this fuse is faulty, the following devices will not function: pump stop switch, pump run switch and the fuel transfer pump's motor contactor.
Fuse 23 (F23) - Fuse 23 is the fuse for the optional DC Transfer Pump Relay (2 Amp). Fuse 23 is connected in series between the battery terminal B+ and the pump run switch. The contacts of the pump run switch are normally closed. If this fuse is faulty, the fuel transfer pump contactor will not function.
Fuse 27 (F27) - Fuse 27 is the fuse for the DC Air Shutoff Solenoid (16 Amp or 32 Amp). Fuse 27 is connected in series between the battery positive terminal (B+) and the Air Shutoff Relay. If this fuse is faulty, the Air Shutoff Solenoids will not work.