Electronic Control Conﬁguration

The adjustable control dip switches are located at the lower left hand portion of the digital Smart Center. The inputs are only visible and accessible with the front cover removed from the Unit.

Factory Dip Switch Conﬁguration

O	1	2	3	4	5	6	7	8
N
N

Dip Switch Setting

Switches 1-4 ON

Switch 5-7 OFF

Switch 8 ON

Room Freeze Protection – Switch 6

Units are shipped from the factory with the room freeze protec- tion disabled. Room Freeze Protection can be switched on at the owner’s preference by moving Dip Switch 6 to ‘ON’. This feature will monitor the indoor room conditions and in the event that the room falls below 40°F the unit will cycle on high fan with the electric heater. This occurs regardless of mode.

Emergency Heat Override – Switch 7

Units are shipped from the factory with the room emergency heat override disabled. In the unlikely event of a compressor failure a heat pump unit may be switched to operate in only the electric heat mode until repairs can be made, by moving Dip Switch 7 to ‘ON’.

Discharge Air Sensor Override – Switch 8

This switch MUST remain in the “ON” position for Vert-I-Pak models, since they do not use a discharge air sensor. If the switch is positioned in the “OFF” position on these models it will result in the erroneous display Error Code 14 indicating that the Discharge air temperature sensor is open or shorted.

Note: In order for the control to recognize “Dip” switch setting changes, the unit must be disconnected from power supply when making any conﬁguration changes.

Electronic Control Error Code Diagnostics and Test Mode

Error Code Diagnostics

The VPAK electronic control continuously monitors the Vert-I-Pak unit operation and will store error codes if certain conditions are witnessed. In some cases the unit may take action and shut the unit off until conditions are corrected.

To access the error code menu press the ‘HEAT’ and ‘HIGH

FAN’ buttons simultaneously for three seconds. If error codes are present they will be displayed. If multiple codes exist you can toggle between error codes using the temp up ▲ button. To clear all codes press the temp down ▼ button for three seconds while in the error code mode. To exit without losing codes press the ‘Low Fan’ button.

Button Location for Vert-I-Pak Models

With the remote thermostat escutcheon installed, the button locations to access the diagnostics mode can be located as shown below.

Cool
	High fan
	Heat
Temp	Power
Temp
Fan only	Low fan

*Heat and high fan - access error codes

*Temp up ▲ and temp down ▼ - toggle between error codes

*Low fan - exit error code mode without losing stored error codes.

*Temp down ▼ - clears all error codes

NOTE: Hold buttons down for three seconds.

H)A09K25L, H)A12K50L, H)A09K50L, H)A24K10L, H)A24K25L 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.