ERROR CODES AND ALARM STATUS

Error

Maintenance

 

Problem

Control Board's Action

Code

ICON

 

 

 

 

1

Flash

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

 

 

 

 

 

 

2

Flash

Input Voltage Out of Specification (103

Stop.Open all relays until voltage is back within specs. Resume operation

 

 

- 127 / 187 - 253)

 

3

Flash

Indoor Temperature Sensor is Open or

Set temp to 75°F in COOLING or 68°F in HEATING. Unit continues to

Shorted

 

operate

 

 

 

4

Flash

Indoor Coil Temperature Sensor is

Control Board sets temp to 40°F. Override sensor. Unit Continues to

Open or Shorted

operate.

 

 

 

 

Outdoor Coil Temperature Sensor is

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

5

Flash

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

6

Flash

Outdoor Coil > (grater than) 175 F

test fails 3 times, the severity is increased and the unit operation is locked

 

 

 

 

out.

7

Flash

Indoor Coil < (less than) 30 F for 2

Turn compressor off. Run High Fan speed. When coil temp reachs 45°F

consecutive minutes

resume operation after lockout time.

 

 

8

Log Only

Unit Cycles > (grater than) 9 Times per

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

 

 

hour

 

 

9

Log Only

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

Log Only

Room Freeze Protection

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

 

 

 

 

Only

11

On

WallStat Problem or Connection Issue

Severity 4 error is. Unit operates based on standard input mapping.

 

 

 

 

Severity 2 error opens all relays. Unit will not operate.

12

Flash

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

Flash

Prerssure Limit Switch Open

If unit is cooling or heat pump on,shut down compressor. Run high fan until

switch closes. Resume operation. Third occurance in 1 hour locks unit out.

 

 

 

 

 

 

 

 

14

Flash

Discharge Air Temperature Sensor is

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

Open or Shorted

ON.

 

 

15

Solid On

Heat Pump Error

If indoor coil temp < (Lesser than) ambient temp for 3 minutes. Unit uses

electric heat to satisfy heating demand.

 

 

 

 

16

Flash

Temperature 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

Flash

Equipment Doesn't Meet Minimum

Must have compressor enabled and at least 2 fan speeds

Configuration

 

 

 

 

 

18

Flash

Special Test 1

Severity Level 1

Unit shuts down. Inputs via front panel or t-stat are ignored. Qualified

Technical Service required URGENT

 

 

 

 

19

Flash

Special Test 2

Severity Level 2

Unit operates. Qualified Technical Service required

20

Solid On

Special Test 3

Severity Level 3

Error is Logged Only. Unit operates. Severity 3 keeps unit running.

Attention is needed

 

 

 

 

21

OFF, Log Only

Special Test 4

Severity Level 4

Error is Logged Only. Unit operates. Severity 4 keeps unit running.

22

OFF, Log Only

Outdoor Coil Temperature < 30 F for 2

Unit will use electric heat to satisfy heating demands until temp > 45°F.

consecutive Minutes

Unit must be a Heat Pump.

23

OFF, Log Only

Frost Protection (for Heat Pump Only

Unit will run active defrost for a minimum of 6 minutes when Heat Pump

Unit- YS10M10)

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

 

 

 

 

24

Flash

Outdoor Air Temperature Sensor is

Continue with normal operation. Continue to monitor sensor.

Open or Shorted

 

 

 

Key Sequence

Enter Maintenance Menu

Reset Error Codes & Error History

Action Press SYSTEM + SCHEDULE + BACK + DISPLAY/ENTER for 6 secs or until double beep sounds() Press + for 3 secs or until double beep sounds ()

56

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Image 57
Friedrich R-410A service manual Error Codes and Alarm Status, Icon

R-410A specifications

Friedrich R-410A is an advanced refrigerant widely used in HVAC (Heating, Ventilation, and Air Conditioning) systems, known for its high efficiency and environmental friendliness. As a hydrofluorocarbon (HFC) blend, R-410A has become the preferred alternative to R-22, which is being phased out due to its ozone-depleting potential. One of the main features of R-410A is its high latent heat of vaporization, which allows for efficient heat transfer and improved cooling performance in air conditioning units.

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