Hydro-Temp RSPro Error Codes:

If the bell is illuminated on the thermostat press the info button to receive one of the following codes in place of the outside air temperature.

• 1 = Low Limit Tripped
• 2 = High Limit Tripped
• 3 = Freeze Lockout (Refrigerant freeze detected on refrigerant line exiting the water coil)
• 5 = Sensor Failure. (Could include bad thermostat, supply air temp sensor, freeze temp sensor, etc)
• 10 = Enable off. (Could include bad thermostat, smoke input off, 3 phase protector off, VFD fault, 5 minute power up delay, etc)
• 11 = Master switch input off. (occasionally there will be other items in series with the master switch)
• 15 = Temp Fault. (If the unit has been running for 1 hour and the delta T is less then 8 deg this will fault)
• 141 = Unit is locked out due to multiple low limit trips.
• 142 = Unit is locked out due to multiple high limit trips.
  
  The higher numbers will have priority.
  
  If the bell is not illuminated on the thermostat and you press the info button you will normally see the outside air temp, if applicable