Troubleshooting Guide - Novatech Pulsafeeder MicroVision Timer Installation & Operation Manual

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13. TROUBLESHOOTING GUIDE

Symptom
Controller does not power
up.
Controller displays "No
Flow" alarm message.
Controller displays "Drum
X Low" alarm message.
Controller displays "Clock
Err" alarm message.
Controller displays
"Watchdog" alarm message.
72-910-23 Rev.F
Page 26 of 30
Probable Cause
No power supplied to controller.
Fuse is blown.
Ribbon cable.
No flow thru flow assembly.
Flow switch wiring or connector
loose.
Flow switch stuck.
Flow assembly clogged.
Flow switch input jumper
missing.
Drum fluid level low.
Drum level switch wiring or
connector loose.
Drum level switch stuck.
Internal controller clock failure.
Internal controller failure.
Possible Solution
Insure that correct voltage is supplied to controller.
Check circuit breaker supplying power to the
controller.
check/replace fuses F1-F3 (see Figure 2, Page 5)
Check ribbon cable connecting upper and lower pc
boards inside controller.
Insure there is enough water flow through the
assembly. At least 1 GPM (3.8 LPM) of flow.
Check flow switch connections (see Figure 5, Page 8).
Clean flow switch sensor mechanicals.
Clean inside flow assembly.
Install jumper if flow switch is not used.
Refill drum for timer X. (where x =1 to 5)
Check switch connections (See Figure 5, Page 8).
Clean switch sensor mechanicals.
Replace controller.
Replace controller.