Troubleshooting the Riello F40

 

Thermostat is calling for heat and burner is not running

 

Reset Control Box

 

 
Burner Starts Burner does not Start


 
 
 
 
 
 
 
 

 

 

 

 

 


  
  
  
  
  
  
  
  
 


Test for 120 Vac at sub-base between L(P) & N or terminals #3 & #5

  Is voltage present?
120Vac      NO Voltage


















 

 

 

 

 

 












 


 
 
 


  • Check system fuse, ensure service switch is on
  • Verify all control limits are closed
  • If using switching relay - verify 24 Vac at T-T

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Turn off power supply - Remove control box and jumper terminals #5 & #6. Restore power

Motor Runs

Motor does not run


 
 
 
 
 
 
 
 
 
 
 
 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

  
  
  
  
  
  
  
  
  
  
  
  
 


 


  • Verify electrical connections
  • Check for seized pump, motor, or fan against housing.
  • Defective motor capacitor
  • Thermal overload (Hot motor)

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  • Verify reduced voltage (42-52Vac) between terminals #3 & #7.
  • Ensure good contact between control box spades and sub-base terminals
  • Defective control box/Replace

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Burner Stays in Pre-purge
Burner continues to purge and light off with intermediate flame dropout (530SE)  only
Burner locks out after trial for ignition
Burner fires-cycles on & off in quick succession - (483SE only)

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  • Faulty CAD cell or seeing light before trial for ignition
  • Coil wires on terminals #1 & #2 OR #1 #8 reversed
  • Open coil circuit, Terminal #2 & #8
  • Open coil circuit. Terminal #1 (530 SE only)
  • Open coil circuit. Terminal #1 (483 SE only) will cause burner to cycle normally, but burner will lock out.
  • Defective 42-52 Vac supply. Terminals #3 & #7
  • Defective control box/ Replace

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  • Metal Yoke for coil missing
  • Coil wire #2 & #8 reversed
  • Low resistance of coil holding circuit, Terminals #1 & #2 (1350 Ohms +/- 10%)

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  • Low resistance or no contact on starting circuit of coil, teerminals #2 & #8. (1.3 ohm +/- 10%)
  • No oil supply-Tank empty, valve closed, dirty filter, damaged supply lines
  • Defective or dirty oil valve stem, nozzle or pump strainer
  • Broken pump drive key, defective pump, no oil pressure
  • Ignition electrodes shorted, cracked porcelin
  • Burner motor not up to speed
  • Excessive draft over fire
  • Defective control box/replace

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  • Metal yoke for coil missing
  • Low resistance or short in holding circuit of coil, terminal #1 & #2.
  • Coil wires on terminals #2 & #8 reverse

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