What does the FLT dr fault code mean on the VUKAR DM-Universal-V1 controller?

FLT dr is the dry run fault. The controller trips when the motor current stays below the Dry Run Ampere setting (dr) for longer than the Dry Run Trip Delay (drt), which indicates the pump is running without water. To reset: it clears automatically after the Rest Timer (rst) duration if the Cyclic Timer is enabled, or press and hold the MENU switch for 2 seconds for a manual reset, or turn the power OFF and then ON.

What do the hiu and lou voltage settings do?

hiu is the high voltage cut-off limit (settable 140-500 V) and lou is the low voltage cut-off limit (settable 130-490 V). If the supply voltage stays above hiu or below lou, the controller stops the motor to protect it. Note that the factory defaults - 500 V for hiu and 130 V for lou - are the disabling values, so voltage protection is effectively OFF as shipped until the installer sets real limits. Typical settings are 460 V and 350 V for three phase systems, and 270 V and 200 V for single phase systems.

Does the motor restart automatically after a dry run trip?

Yes, if the Cyclic Timer is enabled: the FLT dr fault clears automatically after the Rest Timer (rst) duration, which also gives a low-yield borewell time to recharge before the next pumping attempt. Without the Cyclic Timer, the fault must be cleared manually by holding the MENU switch for 2 seconds, or by turning the power OFF and ON. After a fault trip, the Auto Reset Timer (atc) sets how long the controller waits before attempting an automatic restart.

How do I set overload protection with the ol and olt parameters?

ol (Overload Ampere) is the maximum current the motor is allowed to draw - the manufacturer recommends setting it to 110% to 120% of the motor's rated full-load current. olt (Overload Trip Delay) is how long the motor may run above that current before the controller trips, typically 5 to 15 seconds depending on the motor's starting characteristics; setting olt to 0000 disables the overload trip. If the controller shows FLT oL, reset it by pressing and holding the MENU switch for 2 seconds, or by turning the power OFF and ON (the power reset works only when the olm parameter is set to No).

What does the ast (Auto Start Time) setting do after a power cut?

ast is the delay after power is restored before the motor starts automatically. It is settable from 0 to 999 seconds; the factory default is 30 seconds, and 60 to 300 seconds is the typical recommended range depending on the installation. Setting ast to 0000 disables the auto start facility.

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Single Phase Motor Starter — Compare Pump Models

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Motor Type Borewell Openwell Monoblock

Feature Auto Off / Stop Timer Cyclic Timer + Auto Switch Cyclic Timer + Water Level Controller Cyclic Timer + Clock Timer Cyclic Timer + Water Level Controller + Clock Timer

HP Rating 0.5 HP 0.75 HP 1 HP 1.5 HP 2 HP 3 HP

This Single Phase Motor Starter page is a selection hub for VUKAR starter panels used with borewell, openwell and monoblock pumps. Compare the application, motor HP and required control functions before opening the dedicated model page.

Who should use this comparison?

Use this page when you know the pump type and rating but still need to choose between Auto Switch, Water Level Controller, Clock Timer, Cyclic Timer, MCB and Water Level Indicator options.

Choose by pump application

Application	Starting point	When to choose it
Borewell or openwell	BOM-G motor auto starter	For Cyclic Timer + Auto Switch with motor protection.
Borewell with tank automation	BOA-C water level controller starter	For automatic tank filling with Cyclic Timer.
Openwell	OPM-C openwell starter	For openwell pump operation with Cyclic Timer + Auto Switch.
Openwell with tank automation	OPA-B openwell level controller starter	For automatic tank filling from an openwell pump.
Monoblock or Tullu pump	MOM-C monoblock starter	For Cyclic Timer + Auto Switch without tank-level control.
Monoblock with tank automation	MOA-B monoblock level controller starter	For automatic overhead-tank filling.

How to compare the functions

Auto Switch: controls pump start and stop through the selected automatic operating mode.
Water Level Controller: uses the connected sensor or float switch to control tank filling.
Water Level Indicator: shows tank status; an indicator alone does not mean automatic level control.
Cyclic Timer: runs repeated ON/OFF cycles.
Clock Timer: adds time-of-day scheduling where the selected model includes it.
MCB: is available only on model variants that explicitly include MCB.

Motor protection and monitoring

The listed starter families provide voltage, overload and dry-run protection plus operating indications. Exact functions differ by model, so use the dedicated product page and selected variant as the final specification.

Select the correct variant

Confirm whether the pump is borewell, openwell or monoblock.
Match the product variant to the motor nameplate HP and operating current.
Choose automatic level control, timer, indicator and MCB options only when required.
Have a qualified electrician confirm wiring, earthing, capacitor connections and protection settings.

Warranty, delivery and support

Warranty: 1 year when purchased from this website.
Dispatch: 0–1 working day. Expected delivery: 1–5 working days from the order date across India.
Shipping: free across India.
Technical support: WhatsApp or call +91 63588 96254.

Frequently asked questions

Does one starter fit every single phase pump?

No. Match the pump application, nameplate HP/current and required functions to the exact variant.

Should I choose Water Level Indicator or Water Level Controller?

Choose an indicator only to view tank status. Choose a controller when the pump must start and stop from tank level.

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Single Phase Motor Starter — Compare Pump Models