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Verified 2026-10-17

LP1502 default installer code and reset

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Default codes are for authorized installers. Change defaults at commissioning. No bypass or unauthorized-access instructions.

Mercury LP1502. Last verified 2026-10-17 against PLT-05244 A.6.

Defaults Flag

usernameadmin
passwordpassword (enabled by DIP 1 for 5 minutes only)
Default IP192.168.0.251 / 255.255.0.0, gateway 192.168.0.1, port 3001

Reset

Set DIP 2 ON and power-cycle to restore factory network settings. Then set DIP 1 ON (no power cycle) to enable admin/password for 5 minutes. Create an account, then set all DIPs OFF.

Lockout and firmware

Default login only works in the DIP 1 window.

Questions

What is the default installer code for LP1502?

admin

How do I reset LP1502 to factory defaults?

Set DIP 2 ON and power-cycle to restore factory network settings. Then set DIP 1 ON (no power cycle) to enable admin/password for 5 minutes. Create an account, then set all DIPs OFF.

What is the default IP?

192.168.0.251 / 255.255.0.0, gateway 192.168.0.1, port 3001

Why is my installer code not working?

Default login only works in the DIP 1 window.

Source: PLT-05244 A.6

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