ERROR CODES AND ALARM STATUS

Error

Problem

Control Board's Action

Code

 

 

1

Front Panel Button Stuck For More

Continue to monitor for "OPEN" (Unstuck) switch. Do not process switch

Than 20 Seconds

input. ENSURE FRONT COVER DOES NOT DEPRESS BUTTONS

 

2Input Voltage Out of Specification (103 Open all relays until voltage is back within specs. Resume operation - 127 / 187 - 253)

3Indoor Temperature Sensor is Open or Set temp to 75°F in COOLING or 68°F in HEATING. Unit continues to

Shortedoperate

4

Indoor Coil Temperature Sensor is

Control Board sets temp to a default of 40°F. Override sensor. Unit

Open or Shorted

continues to operate.

 

 

Outdoor Coil Temperature Sensor is

Sets temp to 20°F. Override sensor. Continue operation. Use Elec Heat if

5

available for HEATING. If not available use HEAT PUMP if outdoor temp

Open or Shorted

 

allows.

 

 

 

 

Shut down for 5 min. Resume operation for 3 min. Continues to monitor. If

6Outdoor Coil > (greater than) 175 F test fails 3 times, the unit operation is locked out. Unplug and replug to reset.

7Indoor Coil < (less than) 30 F for 2 Turn compressor off. Run High Fan speed. When coil temp reachs 45°F

consecutive minutesresume operation after lockout time.

8Unit Cycles > (grater than) 9 Times per Continue operation. Continue to monitor. Take no action. Log Only. hour

9

Unit Cycles < (less than) 3 Times per

Continue operation. Continue to monitor. Take no action. Log Only.

Hour

 

 

 

 

Only used if Electric Heat is available. Run High Speed and Electric heat

10

Room Freeze Protection

until room temp reaches 46°F. Display "FRZ" during operation. Logged

 

 

Only

11

Not Applicable

Not Applicable

 

 

 

12

Discharge Air > (greater than) 185 F

Shutdown heat pump and electric heater. Run high fan speed until temp is

100°F. Resume operation. Third occurance in 1 hour locks unit out.

 

 

 

 

 

13

Not Applicable

Not Applicable

 

 

 

14

Discharge Air Temperature Sensor is

Override Sensor. Set temp to 75°F. Continue to monitor. Set error code 14

Open or Shorted

ON.

 

15

Heat Pump/Reversing Valve Error

If indoor coil temp < (Lesser than) ambient temp for 5 minutes. Unit uses

electric heat to satisfy heating demand. Unplug and replug to reset.

 

 

16Temperature Beyond Operating Limits Ambient temp < (less than) 0°F and ambient temp > (greater than) 130°F. Set error code 16 ON. When cleared return unit to normal.

17

Equipment Doesn't Meet Minimum

Must have compressor enabled and at least 2 fan speeds

Configuration

 

 

18

Not Applicable

Not Applicable

 

 

 

19

Not Applicable

Not Applicable

20

Not Applicable

Not Applicable

 

 

 

21

Not Applicable

Not Applicable

22

Outdoor Coil Temperature < 30 F for 2

Unit will use electric heat to satisfy heating demands until temp is greater

consecutive Minutes

than 45°F. Unit must be a Heat Pump with electric heat.

 

23

Frost Protection (for Heat Pump Only

Unit will run active defrost for up to 6 minutes when Heat Pump run time

Unit- YS10M10)

is greater than 60 minutes and outdoor coil temp is 26 F or less.

 

 

 

 

24

Not Applicable

Not Applicable

 

Key Sequence

 

Action

To Access Error Codes

Press the fan speed and key for 3 seconds

Reset Error Codes & Error History

Press + timer/schedule for 3 seconds

When you have entered the Error Codes section, an “E” will appear. Use the up and down Only active error codes will display.

keys to scroll through error codes.

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Friedrich SS12N10*, SS14N10*, SS15N30*, SS10N10*, SM18N30* service manual Error Codes and Alarm Status

SM18N30*, SS10N10*, SS15N30*, SS12N10*, SS14N10* specifications

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