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PAGE 50 — MAYCO C-30HDNI (PRECISION) PUMP — OPERATION AND PARTS MANUAL — REV. #7 (04/03/12)
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Malfunction Indicator Diagnostic System
The Mayco C-30HDNI concrete pump features an engine
malfunction indicator LED, found on the control panel
(Figure 5). When a malfunction in the operation of the engine is
detected, the light will blink in sequence to indicate an error
code. Use the Diagnostic Error Code Table (Table 7) to
troubleshoot the malfunction.
Determining an Error Code
The malfunction indicator light blinks in two patterns; long and
short. Count the long blinks to determine the first digit of the
error code. Count the short blinks to determine the second digit
of the error code.
For example, four long blinks and three short blinks represent
error code 43, indicating a faulty fuel injector.
C-30HDNI PUMP — MALFUNCTION INDICATOR DIAGNOSTIC ERROR CODES