Finnex Max-300 Troubleshooting
Planted Tank Forums
Your Tanks Image Hosting *Tank Tracker * Plant Profiles Fish Profiles Planted Tank Guide Photo Gallery Articles

Go Back   The Planted Tank Forum > Sponsors > Finnex / Schuber Wright

Thread Tools Display Modes
Old Today, 01:34 AM   #1
Algae Grower
PTrader: (0/0%)
Join Date: Aug 2013
Location: Syracuse, NY
Posts: 10

Finnex Max-300 Troubleshooting


I own a Finnex Max-300 Temperature Controller. Purchased February 12, 2014. I'm having trouble with it all of a sudden.

When I plug my Hydor inline heater directly into the power outlet, it works fine, the red light on the heater itself turns on indicating that it's heating the water.

When I plug the heater into the Finnex Max-300 and turn the Max-300 on, the red light on my heater turns on for a half second and them immediately turns off. Meanwhile, the Finnex Max-300 has both green and red lights on, indicating that it is allowing power to reach the heater. But it isn't because the Hydor's light isn't on.

When I attempt to change the temperature setting by pressing the on/off/set button, it blinks "88" one to three times (and beeps with each blink) and returns to the current temperature reading, not allowing me to modify the setting.

Any ideas what's wrong and/or how to fix it?

Last edited by gildedrain; Today at 01:52 AM.. Reason: added info, forgot about the beeps
gildedrain is offline   Reply With Quote Quick reply to this message
Sponsored Links

Quick Reply

Register Now

In order to be able to post messages on the The Planted Tank Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
If you do not want to register, fill this field only and the name will be used as user name for your post.
Please enter a password for your user account. Note that passwords are case-sensitive.
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:


Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.

Thread Tools
Display Modes

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

All times are GMT. The time now is 07:08 AM.

Powered by vBulletin®
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Copyright Planted Tank LLC 2012