Braeburn 5300 3H-2C User Manual - Manual (Page 14)

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4
TROUBLESHOOTING
SYMPTOM POTENTIAL SOLUTION
cont.
Symptom: HI is shown in the thermostat display where the room temperature is normally displayed.
Potential Solutions: The temperature sensed by the thermostat is higher than the 99˚ F (37˚ C) upper limit of the
thermostat’s display range. The display will return to normal after the sensed temperature lowers within the 40˚ to
99˚ F (5˚ to 37˚ C) display range. Turn on the cooling system or use other methods to lower the temperature.
This condition could occur from the system being turned off during an exceptionally warm period, or upon installation
when the thermostat has been stored for a long period of time in a warm vehicle or location prior to being installed.
Symptom: The room is too warm or too cold.
Potential Solution: See section 3.1 of this manual to verify the current set point and make any modifications
that are necessary.
Symptom: Thermostat display is blank.
Potential Solutions: It is possible that AC power is not present at the thermostat and the batteries are fully
discharged. Check fuse, circuit breaker and thermostat wiring as appropriate to verify AC power is available.
Replace batteries before reprogramming thermostat. See sections 3.18 and 2.5 of this manual. If AC Power is present,
call a professional service technician to verify thermostat and system performance.
Symptom: Cannot program a set point temperature higher than 90˚ F (32˚ C).
Potential Solution: This is above the normal thermostat temperature setting range of 45˚ to 90˚ F (7˚ to 32˚ C).
Symptom: Thermostat will not allow me to change the set point.
Potential Solution: The Keypad is locked. To lock or unlock the keypad, press and hold both the and buttons at the
same time for 5 seconds. The LOCK segment in the display will flash as the program and temperature segments are
cleared (see section 3.10). The time segments will turn to zeros. Enter the 3 digit code programmed in section 2.4.8 of
this manual. After setting the last digit, press the
RETURN key for 1 second. The display will return to the normal mode. If
an incorrect code is entered, the display will flash “ no”.
Symptom: Keypad does not function.
Potential Solution: Keypad is locked (check for LOCK segment in display).
27
4
TROUBLESHOOTING
cont.
Symptom: LO is shown in the thermostat display where the room temperature is normally displayed.
Potential Solutions: The temperature sensed by the thermostat is lower than the 40˚ F (5˚ C) lower limit of the
thermostat’s display range. The display will return to normal after the sensed temperature rises within the 40˚ to 99˚ F
(5˚ to 37˚ C) display range. If the temperature in the controlled space seems to be normal, wait for the thermostat to
acclimate to the correct room temperature. If the room seems to be colder than usual, turn on the heating system to
raise the temperature as needed for comfort within the room.
This condition could occur from the system being turned off during a cold weather period or upon installation when
the thermostat has been stored for a long period of time in a cold vehicle or location prior to being installed. The
thermostat should be allowed to warm up prior to installation in order to provide proper heating control once installed.
Symptom: Fan continues to run all the time whether the system is on or off.
Potential Solution: Verify that the fan is programmed to run in AUTO mode. This will allow the fan to run only
when the heating or cooling system is turned on and running.
Check thermostat wiring to make sure that the fan control wiring is connected to the correct terminals on the
wiring terminal block (see section 6 of the Installer Guide).
Symptom: Unit will not enter program mode.
Potential Solution: Non-Programmable mode was selected during Installer Setup (see section 4 of the Installer Guide).
Symptom: Temporary override of the program set point is limited.
Potential Solution: Override limit was set in user options (see section 2.4.7).
Symptom: Heating or cooling set point cannot be raised above a certain limit.
Potential Solution: Set point limit was set in installer options.
Symptom: Heating or cooling system turns on ahead of scheduled program times.
Potential Solution: Adaptive recovery mode was enabled in installer options.