Friedrich 9, 000 BTU'S service manual Electronic Control Board Features, Quiet Start/Stop

ELECTRONIC CONTROL BOARD FEATURES

The new Friedrich Vert-I-Pak has state of the art features to improve guest comfort and conserve energy. Through the use of specifically designed control software, Friedrich has accomplished what other Manufacturer’s have only attempted – a quiet, dependable, affordable and easy to use Vert-I-Pak.

Below is a list of standard features on every Friedrich VPAK and their benefit to the owner.

Quiet Start/Stop	The fan start and stop delays prevent abrupt changes in room acoustics due to the compressor energizing
	or stopping immediately. Upon call for cooling or heating the unit fan will run for five seconds prior to en-
Fan Delay	ergizing the compressor. Also, the fan off delay allows for “free cooling” by utilizing the already cool indoor
	coil to its maximum capacity by running for 30 seconds after the compressor.
Remote Thermostat	VPAK units are thermostat controlled.
Operation
Internal Diagnostic	The new Friedrich digital VPAK features a self diagnostic program that can alert maintenance to compo-
Program	nent failures or operating problems. The internal diagnostic program saves properties valuable time when
	diagnosing running problems.
Service Error Code	The self diagnosis program will also store error codes in memory if certain conditions occur and correct
	themselves such as extreme high or low operating conditions or activation of the room freeze protection
Storage	feature. Storing error codes can help properties determine if the unit faced obscure conditions or if an error
	occurred and corrected itself.
	When the VPAK senses that the indoor room temperature has fallen to 40°F the unit will cycle on high fan
Room Freeze	and the electric strip heat to raise the room temperature to 46°F then cycle off again. This feature works
Protection	regardless of the mode selected and can be turned off. The control will also store the Room Freeze cycle
	in the service code memory for retrieval at a later date. This feature ensures that unoccupied rooms do not
	reach freezing levels where damage can occur to plumbing and fixtures.
Random	Multiple compressors starting at once can often cause electrical overloads and premature unit failure.
Compressor Restart	The random restart delay eliminates multiple units from starting at once following a power outage or initial
	power up. The compressor delay will range from 180 to 240 seconds.
Digital Defrost	The new Friedrich VPAK uses a digital thermostat to accurately monitor the outdoor coil conditions to allow
Thermostat	the heat pump to run whenever conditions are correct. Running the VPAK in heat pump mode save energy
	and reduces operating costs. The digital thermostat allows maximization of heat pump run time.
Instant Heat	Heat pump models will automatically run the electric heater during compressor lock-out to quickly provide
Heat Pump Mode	heat when initially energized, then return to heat pump mode. This ensures that the room is heated quickly
	without the usual delay associated with heat pump units.
Emergency Heat	In the event of a compressor failure in heat pump mode the compressor may be locked out to provide heat
Override	through the resistance heater. This feature ensures that even in the unlikely event of a compressor failure
	the room temperature can be maintained until the compressor can be serviced.
Desk Control Ready	All electronic VPAK units have low voltage terminals ready to connect a desk control energy management
	system. Controlling the unit from a remote location like the front desk can reduce energy usage and
	requires no additional accessories at the VPAK.
Indoor Coil Frost	The frost sensor protects the compressor from damage in the event that airfl ow is reduced or low outdoor
	temperatures cause the indoor coil to freeze. When the indoor coil reaches 30°F the compressor is
Sensor	diabled and the fan continues to operate based on demand. Once the coil temperature returns to 45°F the
	compressor returns to operation.
Ultra-Quiet Air	The VPAK series units feature a indoor fan system design that reduces sound levels without
System	lowering airflow and preventing proper air circulation.
High Efficiency	The VPAK benefits quality components and extensive development to ensure a quiet, efficient and
	dependable unit.
Rotary Compressor	High efficiency rotary compressors are used on all Friedrich VPAKs to maximize durability and efficiency.
Auxiliary Fan Ready	The VPAK features a 24V AC terminal for connection to an auxiliary fan that may be used to transfer air to
	adjoining rooms. Auxiliary fans can provide conditioning to multiple rooms.

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