11
DISPLAY MESSAGES
continued
• “Wkend = xxxxxxxx”
Weekend Enabled/Disabled
• “Volt Sensor Err.”
The control has determined the Voltage Sensor has failed
(NoMax
®
900 and 950)
• “Temp. Sensor Err.”
The control has determined the Temperature Sensor
has failed (NoMax
®
900 only)
• “Clock Error”
The internal back-up battery for the clock has failed
Note 1:
Each time the control is turned on the control will energize ALL
LEDS and the LCD will display “HD Electric Co” followed by the
control type and firmware version (“Model NoMax 900 Vx.xx”,
“Model NoMax 950 Vx.xx”, or “Model NoMax 900T Vx.xx”).
Note 2:
For the NoMax
®
900: If the Voltage Sensor fails, the control will initiate an
Open operation.
For the NoMax
®
900: If both the Voltage and Temperature Sensors fail,
the control will initiate an Open operation. If Voltage Only Mode is
active, and the Voltage Sensor fails, the control will initiate an Open
operation. If Temperature Only Mode is active, and the Temperature
Sensor fails, the control will initiate an Open operation.
Note 3:
While in a failure Mode (see Note 2) Manual Close, while in AUTO, is
disabled. Manual Close, when NOT in AUTO, is still enabled.
FUSING
The NoMax
®
900 Series Controls are supplied with a 15 Amp Slo-Blo
®
fuse,
accessible from the front panel. This fuse disables the control and protects the
capacitor bank switches. If it was removed before installation, the fuse should be
reinstalled after installation is complete.
The control circuitry is also protected by an internal fuse which is not replaceable.
All repairs should be referred to the factory.
Gridco, Inc. v. Varentec, Inc. IPR2017-01135
GRIDCO 1008 - 13/22
