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If you experience problems, please contact a qualified service technician.

Owner’s manual _18

17_ TROUBLESHOOTING

A) Error indicator (E1 to E5) for models: 9SRA-HE and 12SRAI-HE
B) Error indicator (Yellow LED) for models: 15SRAI-HE, 18SRAI-HE and 24SRAI-HE

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Error Contents

Error indication

Diagnostic Method

1

Room temperature thermistor
defective

CODE (E1) or
Yellow LED off for 2 secs,
then flashes 1 time

The detection value of the outdoor temperature
thermistor is either open or shorted.

Check thermistor resistance value

Controller PCB defective

2

Indoor heat exchanger
thermistor error

CODE (E2) or
Yellow LED off for 2 secs,
then flashes 2 times

The detection value of the outdoor temperature
thermistor is either open or shorted.

Check thermistor resistance value

Controller PCB defective

3

Indoor evaporator fan motor
trouble

CODE (E3)
or
Yellow LED off for 2 secs,
then flashes 3 times

Either the indoor fan motor abnormal current or
location error was detected (Permanent stop)

Fan motor connector loose / defective
contact

Fan motor defective

Controller PCB defective

4

Trouble at the communication
level

CODE (E4) or
Yellow LED off for 2 secs,
then flashes 4 times

The wire connected on terminal 1 is loose
(defective contact)

5

Trouble detected by the room
condenser sensor

CODE (E6) or
Yellow LED off for 2 secs,
then flashes 6 times

The detection value of the outdoor temperature
thermistor is either open or shorted.

Check thermistor resistance value

Controller PCB defective

6

High and low pressure switch
trouble

CODE (E9)

or

Yellow LED off for 2 secs,
then flashes 9 times

Low pressure protection has been activated

-

Permanent stop after 5 minutes time
delay

Check if the 2 way valve or 3 way valve
are left closed

Refrigerant leak (Check pressures)

Check LPS wire connections

Low pressure switch defective

Excessive high pressure protection has been
activated

-

Permanent stop after 5 minutes time
delay

Heat radiation is blocked (Inlet / outlet)

Check if the outdoor fan motor is
defective (does not rotate)

Check HPS wire connections

High pressure switch defective

Refrigeration cycle defective

7

Outdoor condenser fan motor
trouble

CODE (EC)

or

Yellow LED off for 2 secs,
then flashes 13 times

Either the outdoor fan motor abnormal current or
location error was detected

-

Permanent stop

Fan motor connector loose / defective
contact

Fan motor defective

Controller PCB defective

Summary of Contents for 12SRA-HE

Page 1: ...M00035 V00 R 410A This system uses...

Page 2: ...rs to a hazard or unsafe practice which can result in personal injury and the potential for product or property damage NOTE Installer Please take time to review this owner s manual with the owner Expl...

Page 3: ...nstalling remote control batteries 5 6_Setting the clock 6 7_Automatic mode 7 8_Cooling mode 8 9_Dehumidifying mode 9 10_Fan mode 10 11_Setting the timer 11 12_Sleep mode 12 13_Adjusting the airflow d...

Page 4: ...ollowing information which is located on the manufacturer s nameplate located on the side of the unit You will be asked this infor mation if your unit requires servicing and or for general inquiries M...

Page 5: ...Do not insert anything between the airflow blades to avoid any damage to the inner fan and to avoid possible harm If the remote control is not used for a long period of time remove the batteries to pr...

Page 6: ...utton 10 Fan speed adjustment button 11 Airflow sweep button 12 Clock button 13 Sleep button 14 Timer setting buttons 15 Clock setting buttons 16 Reset button When operating the air conditioner point...

Page 7: ...display 9 000 12 000 BTU LED display 15 000 18000 24 000 BTU Power indicator Red Operating indicator Blue Timer Sleep indicator Yellow This display screen shows the selected temperature for 3 seconds...

Page 8: ...lose the cover by sliding it back until it clicks into place CAUTION In replacement of batteries Do not use old batteries or different kinds of batteries together Use two AAA 1 5V alkaline batteries I...

Page 9: ...manual _6 6_ SETTING THE CLOCK Clock button Clock setting buttons Clock display 1 Press the CLOCK button on the remote control 2 Press the CLOCK setting buttons to set the time 3 Press the CLOCK butto...

Page 10: ...et and cannot be modified In this mode you can set the following fan speed low med high auto airflow direction To operate 1 Press the ON OFF button on the remote control to start the air conditioner 2...

Page 11: ...LER buttons until the targeted temperature is displayed The available temperature range is between 61 F 16 C and 87 F 31 C Each time you press a WARMER COOLER button the temperature is adjusted by 1 F...

Page 12: ...ll automatically run at regular intervals of 6 minutes ON and 10 minutes OFF When the room temperature is between 72 and 82 F 22 and 28 C the compressor will automatically run at regular intervals of...

Page 13: ...fan mode icon is displayed in the upper left corner of the remote control 3 To adjust the fan speed press repeatedly on the fan speed adjustment button until the target velocity is reached low med hig...

Page 14: ...tomatically start running at a specified time within a maximum time range of 24 hours 1 Press the ON timer button 2 Press the clock setting buttons HR and MIN to set the time you want the unit to star...

Page 15: ...temperature for every hour for up to two hours 4 F 2 C The unit will automatically stop working after another 6 hours of continuous running This means the air conditioner will run less often therefor...

Page 16: ...want the outer blades to move up and down automatically when the air conditioner is operating press the SWEEP button on the remote control or on the unit s control panel Press the SWEEP button again...

Page 17: ...ton repeatedly until the required setting is displayed LOW MEDIUM HIGH AUTOMATIC The air conditioner will automatically set the fan speed to obtain the target temperature Fan speed button Owner s manu...

Page 18: ...h and damage the finish To clean the air filters 1 Open the front grid by lifting the tabs on the lower right and left sides of the unit Raise the front grid until it snaps tight in an open position 2...

Page 19: ...to deactivate When the unit is activated by the auxiliary control it will run in cooling mode and the fan speed is set at high The air conditioner will change fan speed to medium speed and set the tem...

Page 20: ...here is an obstacle between the remote control and the signal receiver The batteries are weak You are too far from the unit Cancel the timer Check the fuses and the circuit breaker Select the correct...

Page 21: ...mmunication level CODE E4 or Yellow LED off for 2 secs then flashes 4 times The wire connected on terminal 1 is loose defective contact 5 Trouble detected by the room condenser sensor CODE E6 or Yello...

Page 22: ...omfort Keep windows and doors closed Cool dry air escapes when they are open Keep furnace floor registers and cold air returns closed Cold air can easily escape through them Do not let drapes or furni...

Page 23: ...8201 W Calumet Road Milwaukee WI 53223 USA www williamson thermoflo com...

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