ERROR CODES AND ALARM STATUS

UNIT CONTROL PANEL

THE DISPLAY SHOWN BELOW HAS FOUR DIGITS. THE LEFT TWO DIGITS INDICATE THE ERROR CODE ( 1 TO 24 ), THE ON/OFF ICONS ABOVE THESE TWO DIGITS INDICATE THE CURRENTS STATE OF THE ERROR CODE. THE RIGHT TWO DIGITS SHOW THE HISTORY COUNT (UP TO 99) OF THE ASSOCIATED ERROR CODE. THE DISPLAY CONTAINS A MAINTENANCE ICON (WRENCH) THAT WILL ILLUMINATE TO INDICATE WHEN THE UNIT NEEDS MAINTE- NANCE.

Check Error Codes

 

 

 

1. PRESS THE ENTER KEY TO ACTIVATE THE DISPLAY.

 

 

 

2. EACH PRESS OF THE SCROLL KEY DISPLAY THE NEXT ERROR CODE.

 

 

Clear History Counters

 

 

 

1. PRESS & HOLD THE ENTER KEY AND THE SCROLL KEY FOR ~ 6 SECONDS

 

 

 

 

ERROR

 

 

 

CODE

Problem

 

Action

1

FRONT PANEL BUTTON STUCK FOR MORE THAN 20 SECONDS

 

CONTINUE TO MONITOR FOR "OPEN" (UNSTUCK) SWITCH. DO NOT PROCESS SWITCH INPUT.

2

INPUT VOLTAGE OUT OF SPECIFICATION (103 - 127 / 187 - 253)

 

UNIT STOPS, OPEN ALL RELAYS UNTIL VOLTAGE IS BACK WITHIN SPECS THEN RESUME OPERATION.

3

INDOOR TEMPERATURE SENSOR IS OPEN OR SHORTED

 

UNIT DEFAULTS TO 75°F IN COOLING OR 68°F IN HEATING AND WILL CONTINUE TO OPERATE.

 

 

 

THE UNIT'S CONTROL BOARD DEFAULTS 40°F. IT WILL OVERRIDE THE SENSOR AND THE UNIT WILL

4

INDOOR COIL TEMPERATURE SENSOR IS OPEN OR SHORTED

 

CONTINUE TO OPERATE.

 

 

 

THE UNIT DEFAULTS TO 20°F, OVERRIDING THE SENSOR. THE UNIT WILL CONTINUE TO OPERATE.

 

 

 

USING ELEC HEAT IF AVAILABLE FOR HEATING. IF NOT AVAILABLE, IT WILL USE HEAT PUMP IF

5

OUTDOOR COIL TEMPERATURE SENSOR IS OPEN OR SHORTED

 

THE OUTDOOR TEMPERATURE ALLOWS.

 

 

 

THE UNIT WILL SHUT DOWN FOR 5 MINUTES. RESUME OPERATION FOR 3 MINUTES. IF TEST FAILS 3

6

OUTDOOR COIL > (GRATER THAN) 175 F

 

TIMES, THE SEVERITY IS INCREASED AND THE UNIT OPERATION IS LOCKED OUT.

 

 

 

THE COMPRESSOR WILL TURN OFF AND THE HIGH FAN SPEED WILL RUN. WHEN COIL TEMP REACHS

7

INDOOR COIL < (LESS THAN) 30 F FOR 2 CONSECUTIVE MINUTES

 

45°F THE UNIT WILL RESUME OPERATION AFTER LOCKOUT TIME.

8

UNIT CYCLES > (GREATER THAN) 9 TIMES PER HOUR

 

THE UNIT WILL CONTINUE TO OPERATE AND BE MONITORED.

9

UNIT CYCLES < (LESS THAN) 3 TIMES PER HOUR

 

THE UNIT WILL CONTINUE TO OPERATE AND BE MONITORED.

 

 

 

ONLY USE IF ELECTRIC HEAT IS AVAILABLE. RUN HIGH SPEED AND ELECTRIC HEAT UNTIL ROOM

10

ROOM FREEZE PROTECTION

 

TEMP REACHES 46°F. THE UNIT WILL DISPLAY "FRZ" DURING OPERATION. LOGGED ONLY

11

WALLSTAT PROBLEM OR CONNECTION ISSUE

 

THE UNIT WILL NOT OPERATE.

12

NOT APPLICABLE

 

NOT APPLICABLE

 

 

 

IF UNIT IS COOLING OR HEAT PUMP IS ON, SHUT DOWN COMPRESSOR. RUN HIGH FAN UNTIL

 

 

 

SWITCH CLOSES, THEN RESUME OPERATION. THE THIRD OCCURANCE IN 1 HOUR LOCKS UNIT OUT.

13

HIGH PRESSURE LIMIT SWITCH IS OPEN

 

APPLICABLE TO 24K UNIT ONLY.

14

NOT APPLICABLE

 

NOT APPLICABLE

 

 

 

IF INDOOR COIL TEMPERATURE IS LESS THAN AMBIENT TEMPERATURE FOR 3 MINUTES THE UNIT WILL

15

HEAT PUMP ERROR

 

USE ELECTRIC HEAT TO SATISFY THE HEATING DEMAND.

 

 

 

OCCURS IF THE AMBIENT TEMPERATURE RANGE FALLS BELOW 0°F OR GREATER THAN 130°F. THE

 

 

 

ERROR CODE WILL REMAIN ON UNTIL THE TEMPERATURE REACHES THE OPERATING RANGE AND THEN

16

TEMPERATURE BEYOND OPERATING LIMITS

 

THE UNIT WILL RETURN TO NORMAL OPERATION.

17

EQUIPMENT DOESN'T MEET MINIMUM CONFIGURATION

 

THE COMPRESSOR MUST BE ENABLED AND HAVE AT LEAST 2 FAN SPEEDS

18

NOT APPLICABLE

 

NOT APPLICABLE

19

NOT APPLICABLE

 

NOT APPLICABLE

20

NOT APPLICABLE

 

NOT APPLICABLE

21

NOT APPLICABLE

 

NOT APPLICABLE

 

 

 

UNIT WILL USE ELECTRIC HEAT TO SATISFY HEATING DEMANDS UNTIL THE TEMPERATURE EQUALS OR

22

OUTDOOR COIL TEMPERATURE < 30 F FOR 2 CONSECUTIVE MINUTES

EXCEEDS 45°F. APPLICABLE FOR HEAT PUMP MODELS ONLY.

 

 

 

UNIT WILL RUN ACTIVE DEFROST FOR A MINIMUM OF 6 MINUTES WHEN HEAT PUMP RUN TIME IS

23

FROST PROTECTION

 

GREATER THAN 60 MINUTES AND OUTDOOR COIL TEMPERATURE IS 26 F OR LESS.

24

NOT APPLICABLE

 

NOT APPLICABLE

16

Page 18
Image 18
Friedrich 920-075-13 (1-11) Error Codes and Alarm Status, Unit Control Panel, Check Error Codes, Clear History Counters

920-075-13 (1-11) specifications

Friedrich 920-075-13 (1-11) is a sophisticated HVAC unit designed for effective heating and cooling solutions in commercial and residential settings. This model exemplifies modern engineering with a focus on energy efficiency and user convenience. It features a versatile configuration that makes it suitable for a variety of spaces, ensuring optimal climate control.

One of the main features of the Friedrich 920-075-13 (1-11) is its advanced cooling technology. The unit is equipped with high-efficiency compressors that provide rapid cooling performance while consuming minimal energy. This is complemented by a user-friendly digital thermostat that allows for precise temperature settings, enhancing user comfort and satisfaction.

The heating capabilities of this model are equally impressive. Friedrich has integrated a powerful heating element that can quickly warm up any room, making it ideal for year-round use. This is particularly beneficial in regions with extreme temperature fluctuations, ensuring that users remain comfortable regardless of the season.

In terms of build quality, the Friedrich 920-075-13 (1-11) boasts a robust construction that ensures long-lasting performance. Its durable materials are designed to withstand frequent use and adverse environmental conditions. Additionally, the unit features a compact design that allows for easy installation and integration into existing spaces without compromising aesthetic appeal.

Technologically, the Friedrich 920-075-13 (1-11) incorporates smart features such as energy-saving modes and programmable timers. These functionalities enable users to optimize energy use, reducing overall electricity costs while maintaining comfort levels. Moreover, the unit operates quietly, minimizing noise disruption in various settings.

Another notable characteristic is the air filtration system which enhances indoor air quality. The built-in filter captures dust, allergens, and pollutants, ensuring that the air circulated within a space is clean and healthy. This feature is particularly important for individuals with allergies or respiratory conditions.

Finally, the Friedrich 920-075-13 (1-11) is backed by a reliable warranty, reflecting the manufacturer's confidence in its quality and performance. This HVAC unit represents an ideal choice for those seeking a combination of efficiency, comfort, and modern technology in their heating and cooling systems. With its powerful features and innovative design, it stands out as a leading option in the market.