Monitor GF3800 Servise Manual page 58

RESULT | | CHECKS | | RESULT | | REASON | |CORRECTIVE MEASURE
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Failure of microprocessor. (IC1)
Failure of transistor arrey.(IC13)
Failure of photo triac.
(1C4)
Failure of triac.
(Q1)
Failure of resistor.
(R5, R67)
Failure of combustion blower
Incorrect wiring of combustion
blower.
Replace combustion blower.
Correct wiring.
Failure of air pressure switch.
Rubber Hose is Blocked,
Disconnected, or Cracked.
Replace air pressure switch.
dear, Replace, or Correct
Rubber Hose.
Incorrect wiring. Correct wiring.
Failure of microprocessor.
(IC1)
Failure of transistor arrey.flC13)
Failure of relay.
(RL2)
Ignition transformer open
Replace ignition transformer.
Electrode Gap is Incorrect,
or Bectrode Ends are
bunt Off.
Replace electrode and ground
rod if severely burnt, or
re-gap is incorrect