
HBX SNO-0600 Snowmelt Control
Version 1.0.0
Page 2
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Manual
ISSUE POSSIBLE CAUSES & RESOLUTIONS
Cracked Sensor • Improper drainage (see pg.6 SNO-
0110 manual)
• Improper Installation – too much
tension on screw tightening,
hammering sensor into socket
• Resolution – Replace Sensor
Not Melting Any Snow • Sensor not connected (supply, return,
outdoor)
• Damaged Sensor: check sensor for
cracks or deformations
• Incorrect settings: IDLE temperature is
set incorrectly, MELT temperature is set
incorrectly, MELT time is set incorrectly,
one or design temperatures set
incorrectly
• Check if PERMENANT STANDBY/IDLE
setting is OFF
• Incorrect weather forecasting settings
• Improper wiring
• Improper SNO-0110 sensor location
• Check WWSD or CWSD Settings
Residual Snow is Present After
Demand Is Not Present
• Max System Temperature is too low
and WWSD is set too high
• MELT TIME is set too low
Slab Temperature Error • Incorrect wiring (Shield wire not
connected)
• SNO-0110 (Heater) has not reached
operating temperature. Wait at least 1
hour after installation
• Sensor location in slab setup is set
incorrectly.
• Damaged sensor: check for cracks or
deformations
Doesn’t Detect Snow • Damaged sensor: check for cracks or
deformations
• Improper wiring. see SNO-0110
troubleshooting section in manual.
• Sensor location in slab setup is set
incorrectly.
• Snow rate setup is set too high.
• No demand is present.
• WWSD is set too low.
• CWSD is set too high.
Control Screen Is Displaying
“Control is Bootloading”
• Do not power down the control.
This screen will disappeer after 15-30
minutes.
Error Showing On Screen • Sensor is not installed.
• Damaged Sensor: check for cracks or
deformations (Slab temperature)
• Slab setup is incorrect.
Injection Pump Not Turning On • Check wiring
• Make sure mixing is set to injection in
PUMP SETUP
ISSUE POSSIBLE CAUSES & RESOLUTIONS
Buildup Of Snow To Start MELT • Slab Snow Rate setup is too high
• Delta T is set too low
Mixing Valve Not Turning On • Check wiring
• Make sure mixing is set to Floating Up
and/or Floating Down in PUMP SETUP
System temperature uctuating • Check outdoor reset values
Snow Melt Is On When No Snow
Present
• Damaged sensor: check for cracks or
deformations
• Check SNO-0110 troubleshooting
manual
• Check DEMAND SETUP settings
Snow Melt Not Automatically
Starting
• No Demand present
• Check PERMENANT STANDBY/IDLE is
set to OFF
• Check Snow Rate settings
• Check WWSD/CWSD temperatures
• Check wiring
System Pump Not turning On • Check wiring
• No demand present
• Make sure System pump is set in PUMP
SETUP
Boiler is Not Turning On • No Demand present
• Check wiring
• Check WWSD/CWSD temperatures
Slab Temperature Changes
Drastically When It Comes In Or
Out of WWSD/CWSD
• The optical sensor has a built in
heater and when it is installed in the
slab. without the Aux. slab sensor the
control will minus off approximately
40F/22C off the actual slab temp to
accommodate for the internal heater
that has now started up. This heater
can take up to 1 hour to reach it’s
setpoint, thus your slab will appear
that it is much colder when it rst turns
on, the opposite is true when it goes
into WWSD or CWSD the slab temp
will jump by 40F/22C as the control
removes the adjustment, and the
heater will now slowly cool down
which could take up to 1 hour.