Multiquip C30HDNI User Manual
Page 50
PAGE 50 — MAYCO C-30HDNI (ZENITH) PUMP — OPERATION AND PARTS MANUAL — REV. #11 (04/03/12)
C-30HDNI PUMP — MALFUNCTION INDICATOR DIAGNOSTIC ERROR CODES
Malfunction Indicator Diagnostic System
The Mayco C-30HDNI concrete pump features an engine malfunction indicator LED, found on the control panel
(Figure 8). 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 five short blinks represent error code 45, indicating a faulty oxygen sensor.
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