Troubleshooting, Airflow Fault 1 Flash | Greenheck Fan PVF specification

Troubleshooting

Ignition Control Diagnostic LED

During normal operation, the LED is shut off. The LED will be on or flashing during a fault condition. If a fault condition is occurring, turn the unit off and on again. If the LED is still flashing, refer to the following troubleshooting section.

LED Indication	Error Mode
Steady on	Internal control failure
1 flash	Air flow fault
2 flashes	Flame with no call for heat
3 flashes	Ignition lockout

Airflow Fault (1 Flash)

An airflow fault may occur for the following reasons:

•An airflow switch continually monitors the combustion airflow during an ignition sequence. During the initial call for heat, if the pressure switch contacts are in the closed position for 30 seconds without an output to the combustion blower, an airflow fault will be declared. The control will remain in this mode with the combustion blower off.

•After the combustion blower output (L1 and IND) is energized and the airflow switch remains open for more than 30 seconds, an airflow fault will be declared. The control will stay in this mode with the combustion blower on, waiting for the airflow switch to close.

•If the airflow signal is lost while the burner is firing, the control will immediately de-energize the gas valve and the combustion blower will remain on. If the call for heat remains, the control will wait for proper airflow to return. If proper airflow is not detected after 30 seconds, an airflow fault will be declared. If proper airflow is detected at any time, a normal ignition sequence will begin.

Once proper airflow is detected, the normal Sequence Of Operation for ignition will follow (see page 4).

Flame Fault (2 Flashes)

If the main valve fails to close completely and maintains a flame, the full-time flame sense circuit will detect it and energize the combustion blower. Should the main valve later close completely and remove the flame signal, the combustion blower will be de-energized.

Ignition Lockout (3 Flashes)

Possible Cause	Solution
Manual gas valve not open	Open manual valve
Air in the gas line	Bleed gas line

Supply gas pressure too high or too low	Check that supply pressure is between 6 in. wg and 14 in. wg for
	natural gas and 11 in. wg and 14 in. wg for LP.

Loose wire connections	Check for tight wire connections.
No spark:
a. Transformer failure	a. Check primary and secondary voltages of transformer. Replace
	if necessary.
b. Spark electrode	b. Ensure spark gap is 1⁄8 in. and ceramic insulator is not cracked.
	Replace if necessary. Electrode is NOT field-adjustable.
c. Spark cable shorted to ground	c. Replace spark cable
d. Ignition controller not grounded	d. Check that the ignition controller is grounded to the furnace
	control center.
High limit control tripped	Check unit airflow and manifold pressure.
Faulty combination gas valve	If 24 volts is measured between terminals MV and common, but
	valve remains closed, replace valve.

Faulty ignition control	Check diagnostic LED for steady on and for voltage between V1
	and V2. If no voltage is present, replace ignition control.

PVF specifications

Greenheck Fan PVF (Packaged Ventilation Fan) represents a significant advancement in commercial and industrial ventilation technology. These fans are designed to provide efficient air movement for a variety of applications, ensuring improved indoor air quality and optimal operational performance. One of the main features of the PVF is its packaged design, which simplifies installation and minimizes the footprint of the equipment. This compact solution integrates multiple components into one unit, reducing the need for extensive ductwork and external accessories.

The Greenheck Fan PVF incorporates several cutting-edge technologies that enhance its performance and energy efficiency. Its EC (Electronically Commutated) motors are a prime example, delivering advanced energy savings compared to traditional motor types. These motors also provide variable speed control, allowing users to adjust the airflow according to specific needs, further optimizing energy usage.

Another key characteristic of the PVF is its durable construction. The unit is built with high-quality materials resistant to corrosion and wear, ensuring longevity and reliable operation in demanding environments. Additionally, the fans are designed with insulated housing to minimize noise levels during operation, making them suitable for use in noise-sensitive areas.

The PVF also features an easily accessible maintenance design, which promotes user-friendly serviceability. The arrangement of components allows for quick inspections or repairs without the need for extensive disassembly. This design consideration refreshes the operational uptime of the unit, ensuring that ventilation requirements are consistently met.

Moreover, Greenheck's commitment to sustainability is reflected in the PVF's design. The fan is engineered to meet or exceed industry standards for energy efficiency, making it an eco-friendly choice for businesses looking to reduce their carbon footprint. Its versatility allows the PVF to be used in various applications, including restaurants, schools, and commercial buildings, adapting seamlessly to diverse airflow needs.

In conclusion, the Greenheck Fan PVF is a state-of-the-art packaged ventilation fan that combines performance, efficiency, and durability. Its innovative technologies, compact design, and user-friendly features make it an ideal choice for a wide range of commercial and industrial ventilation applications, reinforcing Greenheck's reputation as a leader in the ventilation industry.