
5
6
  | TROUBLESHOOTING | 
Problem | Possible Causes & Solutions | 
Lights do not turn on.  | No power. Plug the unit in.  | 
  | No power. If the outlet is damaged, try another  | 
  | outlet on another circuit.  | 
Yellow light blinks 1x  | Battery manufacturer’s rated capacity may  | 
  | exceed charger's rating.  | 
  | Battery may be damaged or old.  | 
Yellow light blinks 2x  | Battery manufacturer’s rated capacity may  | 
  | exceed charger's rating.  | 
  | Battery may be damaged or old.  | 
Yellow light blinks 3x  | Battery manufacturer's rated capacity may  | 
  | exceed charger's rating.  | 
  | Battery may be damaged or old.  | 
  | Unit may be damaged if operation does not  | 
  | resume after AC power is removed and reapplied.  | 
Yellow light blinks 4x  | Battery voltage exceeds charger specified  | 
  | operating range.  | 
Yellow light blinks 5x  | Charger overheated. Remove power, wait ten  | 
  | minutes and then reapply power.  | 
Yellow & Green lights  | Battery may not be connected to the charger.  | 
blink simultaneously  | Battery may be severely discharged (<6VDC).  | 
  | Battery connections may be reversed.  | 
Yellow & Green lights  | Charger is in the program mode. Handheld  | 
alternately blink  | programmer is connected to the charger.  | 
  | Disconnect the programmer from the charger.  | 
  | MAINTENANCE | 
Cleaning:  | 
  | 
Excess dirt or grime may be removed from the unit by wiping it with a cloth dampened with water.
Curtis 1604/08 Manual  | page 9  |