Manual Reset Of Error Conditions; Auto-Reset Of Error Conditions; Table 31: Auto-Reset Of Blocks - DAB PUMPS PWM 203 Instruction For Installation And Maintenance

7.2

Manual reset of error conditions

In error status, the user can reset the fault by overriding a new attempt by pressing and releasing buttons + and -.
7.3

Auto-reset of error conditions

In the cases of some malfunctions and block conditions, the system makes a number of attempts at automatic reset of the electric
pump. The auto-reset system regards in particular:
- "BL" Block due to water failure
- "LP" Block due to low power supply voltage
- "HP" Block due to internal high voltage
- "OT" Block due to overheating of final power stages
- "OB" Block due to overheating of printed circuit
- "OC" Block due to current overload on electric pump motor
- "OF" Block due to current overload on final stages of output
- "BP" Block due to fault on pressure sensor
If, for example, the pump is blocked due to water supply failure, the inverter automatically starts a test procedure to verify that the
unit is effectively without water permanently. During the sequence of operations, if a reset attempt succeeds (for example water has
returned), the procedure is interrupted and normal operation is resumed.
Table 31 shows the sequence of operations performed by the inverter for the different types of block.
Display message
BL
LP
HP
OT
OB
OC
OF
Automatic reset of error conditions
Description
Block due to water failure
Block due to low line voltage
Block due to high internal power
supply voltage
Block due to overheating of final
power stages
(TE > 100°C)
Block due to overheating of printed
circuit
(BT> 120°C)
Block due to current overload on
electric pump motor
Block due to current overload on
final stages of output

Table 31: Auto-reset of blocks

ENGLISH
Automatic reset sequence
- One attempt every 10 minutes for a total of 6 attempts
- One attempt every hour for a total of 24 attempts
- One attempt every 24 hours for a total of 30 attempts
- Reset when specified voltage is restored
- Reset when voltage returns to a specified value
- Reset when temperature of final power stages falls below 85°C
- Reset when temperature of printed circuit falls below 100°C
- An attempt every 10 minutes for a total of 6 attempts
- An attempt every hour for a total of 24 attempts
- An attempt every 24 hours for a total of 30 attempts
- An attempt every 10 minutes for a total of 6 attempts
- An attempt every hour for a total of 24 attempts
- - An attempt every 24 hours for a total of 30 attempts
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