Failure Messages - Pentair NOCCHI FREQUENCY CHANGER Instrucciones Originales

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CHAPTER 8
FAILURES
In case of system failure , the following messages can be displayed on the control board:
STOP FOR
A1
LOW WATER LEVEL
SYSTEM INVERTER
A2
BLOCKED - RESET
TEMP. P 3 4
A3
Bar 04.6
Explanation of messages (see fig.6)
1. LACK OF WATER IN WITHDRAWAL TANK
• The level control signals the lack of
water in the withdrawal tank, or low
pressure in the feed duct(aqueduct)
2. BLOCKAGE INVERTER
The inverter is blocked. The reason of the blockage is indicated on inverter display whose manual gives detail of the position
intervened. If the reason is accidental:
• Momentary overcharge of the motor
pump (example excessive request of
water), or electric too high or too low
voltage, by pushing the RESET key
situated on the inverter keyboard, the
system be reset
The system returns to MANUAL WORKING - red LED lit
The green LED (6) lit and the system begins to function automatically
AU T
• At the same time the red LED -
BLOCKAGE LEVEL shall be lit
• Otherwise cut the voltage off the
switchboard for a few seconds and
connect it again
• In case of failure, repeat the
operation a second time
MA N
• The same thing occurs in case of false
contacts or absence of level control
if the relative terminal have not been
short-circuited
• If the blockage persists, it is possible
to disable the inverter following the
instructions reported in the following
chapter
GB
27