Table   17-1. Fuel-Burning    Winterization    Kit    Troubleshooting    Chart Malfunction Probable   cause Corrective   action 1.   Press-to-test   lamp a.   Faulty   circuit   breaker. a.   Replace   circuit   breaker. does  not  go  on. (para   17-5.) b.   Open   circuit. b.   Isolate   and   repair. 2.  Turn  switch   on, a.   Faulty   circuit a.   Replace   circuit   breaker. nothing   happens. breaker   open. (para   17-5.) b.   Open   circuit. b.   Isolate   and   repair. 3.   Switch   on,   will   not a.   Burned   out   igniter. a.   Visually   inspect   and   test. ignite, Blower Orifice    clogged. Clean   orifice   (para   (17-7.) operates. b.   Pressure   regulator b.   Check   regulator   valve. solenoid    closed. (para   17-70) c.   Fuel   pump. c.   Check   pump   separately. 4.  Fan  runs  all  the a.   Broken   quartz   rod. a.   Replace   rod. time   with   switch off. b.  Flame  switch  out  of b.    Readjust. adjustment. c. Wiring    connections c.   Correct   connections. incorrect. 5.   Heater   starts,   then a.   Faulty   micro-switch. a.   Replace   switch.   (para   17-5.) goes  out. b.    Overheats,    trips b.   Check   fuel   rate   (too   high). limit  switch. Check  for  closed  ducts  or restrictions.   Check blower    speed. 6.   Circuit   breaker Short   circuit. Disconnect   basic   components,   one   at   a   time, pops   open. to  isolate  short   -  then  check  wiring.  Replace shorted/defective   components   or   wire. 7.   Failure   to   shut   off. a.   Fuel   regulator   valve a.   Replace   valve. stuck  open. b.   Flame   switch   stuck b.   Adjust   or   replace. open. 8.   Surging   combustion. a.   Fuel   regulator   operating a.   Check   fuel   rate   and   replace   valve erratically. if   necessary. b.   Fuel   pump   operating b.   Replace   pump. erratically. 9.   Coolant   pump   fails Faulty   coolant   pump.   (See Repair   or   replace   pump.   (See   malfunction   no. to    recirculate malfunction  no.  4  of of   table   17-3.) liquid. table   17-3) 10.   Coolant   pump   turns Pump   passages   or   blade   slots Remove   pump   from   motor;   disassemble   and over  but  fails  to plugged  with  foreign clean.   Clean   filter. deliver    fluid. matter. 11.   Erratic   or   reduced a.   Air   leak. a.   Check   tubing   connections   for   leaks. output. b.   Reduced   voltage. b.   Check   voltage   input   to   motor. 17-2