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 service. This wrench indicates an error code # is on (active). To find out which one, check all error codes.

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 (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

 

 

if setting is below 75°F in cool mode or if above 68°F in heat mode.

 

 

 

 

 

The unit's control board defaults to 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 unit operation is locked out. See troubleshooting page 42. To reset,

 

 

turn power off and on.

 

 

 

 

 

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.

10

Not Applicable

Not Applicable

 

 

 

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

 

VPAK 24K Unit Only

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. To reset, turn power off and on.

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. Causes could be bad reversing

 

 

valve, heat load too high.

 

 

 

 

 

Occurs if the indoor ambient temperature range falls below 0°F or greater than 130°F. The

16

Temperature beyond operating limits

error code will remain on until the temperature reaches the operating range and then

 

 

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

 

(Not an error code)

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.

23

Not Applicable

Not Applicable

24

Not Applicable

Not Applicable

16

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Image 17
Friedrich R410A manual Error Codes and Alarm Status

R410A specifications

Friedrich R410A is a refrigerant blend that has become a cornerstone in the HVAC industry, particularly for air conditioning systems. This hydrofluorocarbon (HFC) is known for its efficiency and environmentally friendly properties, making it a popular alternative to older refrigerants like R22.

One of the main features of R410A is its exceptional thermal efficiency. It has a higher cooling capacity compared to R22, which allows for smaller and more efficient equipment. This efficiency translates to reduced energy consumption and lower operating costs for users. Additionally, the higher pressure capability of R410A enables the design of more compact systems, which is particularly beneficial for residential and commercial applications where space is often limited.

R410A is characterized by its zero ozone depletion potential (ODP), which is a significant advantage over its predecessors. This makes it a more environmentally responsible choice, aligning with global initiatives to phase out substances that harm the ozone layer. However, it is essential to note that while R410A does not deplete the ozone, it does have a global warming potential (GWP) of approximately 2,088, making it less favorable in terms of climate impact compared to natural refrigerants.

In terms of technology, R410A is typically utilized in systems that are designed specifically for this refrigerant. Equipment compatible with R410A often features advanced components that can handle the higher pressures required. Many modern air conditioning systems equipped with R410A also incorporate variable-speed compressors and advanced electronic controls, enhancing overall performance and comfort.

Additionally, R410A systems often come equipped with variable refrigerant flow (VRF) technology, which allows for precise temperature control in multiple zones of a building. This versatility makes R410A an ideal choice for both residential and commercial installations, providing optimal comfort throughout various spaces.

In summary, Friedrich R410A stands out due to its high energy efficiency, zero ozone depletion potential, and suitability for modern HVAC technologies. As the industry moves towards more sustainable practices, R410A serves as a reliable refrigerant that balances performance with environmental responsibility. It’s a significant choice for anyone looking to invest in efficient and eco-friendly heating and cooling solutions.