Table   17-3.   Electric   Winterization   Kit   Troubleshooting   Chart Malfunction With S301 closed 1.  DS302  does  not illuminate. 2.  DS301  does  not illuminate. 3.  HTR1  and  HTR2 do not heat up. 4.  Coolant  pump  does not   operate. 5.   Coolant   pump   fails to    recirculate liquid. 6.   Coolant   pump   turns over  but  fails  to deliver    fluid. 7.  Erratic  or  reduced output. 8.   Leakage. 9.   Motor   failure. Probable   cause a. b. c. d. e. f. Defective    wiring. Defective  switch  S301. Defective   circuit breaker    CB301. Defective   indicator. Defective  diodes  CR301 to CR304. Defective    transformer. Same  as  a.  to  f.  above. a. b. c. a. b. Relay  K301  does  not energize. Defective    wiring. Heating   element   defec- tive. Same   as   a,   b,   c,   e,   and f  in  step  1  above. Defective   pump. Faulty   coolant   pump.   (See malfunction  no.  4) Pump   passages   or   blade slots  plugged  with foreign   matter. a. b. c. d. e. a. b. a. b. Air  leak. Reduced   voltage. Motor  lag,  low  rpm Scored   cam   ring   bore. Foreign  matter  in pump   blade   slots. Face  of  seal  cage scored,   or   damaged seal   “O”   ring. Seal  face  of  adapter scored. Worn   bearings. Burned    armature. Corrective   action a. b. c. d. e. f. Repair   or   replace   broken   wiring. Check   switch   for   continuity   across   contacts. Check  circuit  breaker  for  correct  operation with   an   ohmmeter. Check   indicator   for   continuity;   it   should have   some   resistance. Check   diodes   with   ohmmeter. Refer   to   transformer   test,   paragraph   17-18. Same  as  a.  to  f.  above. a.   Test   relay. Refer   to   paragraph   17-18. b.   Repair   or   replace   wiring. c.   Replace. d.  Same  as  a,  b, b.   Replace   pump. Repair   or   replace no.  4) c,  e,  and  f  in  step  1  above. pump.  (See  malfunction Remove   pump   from   motor;   disassemble   and clean.   Clean   filter. a. b. c. d. e. a. b. a. b. Check  tubing  connections  for  leaks. Check  voltage  input  to  motor. Check   motor   brushes   for   excessive   wear. Replace   the   cam   ring. Remove   pump   from   motor;   disassemble   and clean  pump  and  filter. Disassemble   and   inspect   seal   cage   face   and “O”   ring.   Refinish   or   replace   as   required. Disassemble   and   inspect   seal   surface. Refinish   or   replace   the   adapter. Replace   motor. Replace   motor. 17-9