Daikin 910193093, Installation And Operation Manual

Page: 30 / 32

30
Troubleshooting
Symptom Remedy
No display Check for 24 VAC at thermostat; display is blank when 24 VAC is not present.
System fan does not come on
properly Verify wiring is correct, check heat source (Gas/Electric) in Configuration
(see Section 7, Page 14).
No response with first button press
Press to activate touch icons.
Program schedule activates at wrong
time Check time (AM/PM) set on thermostat (see Setting the Time & Date, Page 22).
Thermostat turns on/off too frequently Adjust temperature differential (see Configuration Mode Setting, Pages 12-13).
Thermostat does not follow program
Verify the schedule is on : check time (AM/PM); check if in program override.
Fan runs continuously
Press and set to auto . is continuous run.
Room temperature is not correct Calibrate thermostat (see Configuration Mode Setting, Section 17, Page 17).
If remote sensor is used, check S1 and SC terminal connections.
LOCK displays when any button is
pressed
Thermostat has the button lockout function activated
(see Lockout & Unlock Feature, Page 11).
on display instead of room
temperature
Check for a bad connection at the S1 and SC terminals, if used
(see Configuration Mode Setting, Section 19, Pages 20).
Heat or Cool not coming on Verify wiring is correct, gently pull on each wire to verify there is a good connection at
terminal block.
Remote Sensor displays
Check remote sensor temperature at , ,
MENU
VIEW
, .
OVERRIDE displays
Program schedule is in temporary override. Will return to schedule at next transition time.
Setpoints do not display all of the
time
Press ,
MENU
VIEW
, six times,
Alarm displays A unit alarm may be cleared from the thermostat provided a unit fault is no longer
active. Please refer to the Daikin WSHP unit IOM for additional information.