Bryant Essential Maintenance and Troubleshooting for Your 394had Furnace
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12.Reconnect wires to the following components:

a.Draft safeguard switch

b.Inducer motor

c.Pressure switch

d.Limit overtemperature switch

e.Gas valve

f.Edge connector leading to control box

13.Reconnect vent pipe to relief box. Replace vent pipe enclosure (downflow furnace only).

14.Replace blower access door only and secure with 2 screws (downflow furnace only).

15.Turn on electrical power and gas.

16.Set thermostat and check furnace for proper operation.

WARNING: Never use a match or other open flame to check for gas leaks. Use a soap-and-water solution. A failure to follow this warning could result in fire, personal injury, or death.

17.Check for gas leaks.

18.Replace control access door.

D. Electrical Controls and Wiring

NOTE: There may be more than 1 electrical supply to unit. The electrical ground for 115-v wiring must be maintained properly. Refer to Fig. 8 for field wiring information and to Fig. 9 for unit wiring information.

With power disconnected to unit, check all electrical connections for tightness. Tighten all screws on electrical connections. If any smoky or burned connections are noticed, disassemble the connec- tion, clean all parts and stripped wire, and reassemble properly and securely. Electrical controls are difficult to check without proper instrumentation; therefore, reconnect electrical power to unit and observe unit through 1 complete operating cycle.

The 24-v circuit contains an automotive-type, 3-amp fuse located on the main control board. Any direct shorts during installation, service, or maintenance could cause this fuse to blow. If fuse replacement is required, use ONLY a 3-amp fuse of identical size.

PILOT HEAD V–NOTCH FALLS

DIRECTLY BELOW FRONT EDGE

OF BURNER CARRYOVER.

1/8″

A91249

Fig. 7ÐPosition of Pilot to Burner

E. Pilot

Check the pilot and clean if necessary at the beginning of each heating season. The pilot flame should be high enough for proper impingement of the flame sensing element (or thermocouple) and to light the burners. Remove the accumulation of soot and carbon from the flame sensing element (or thermocouple). Refer to Fig. 7 for proper location of pilot on burner assembly.

F. Troubleshooting

Page 8 contains a troubleshooting chart. This chart can be a useful tool in isolating furnace operation problems. Beginning with the word "Start," answer each question and follow the appropriate arrow to the next item.

The chart will help identify the problem or failed component. After replacing any component, verify correct operating sequence as indicated by bold arrows.

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Contents Ð1Ð Safety ConsiderationsCare and Maintenance Ðfilter Size Information for Down Flow Furnace Air Filter ArrangementÐfilter Size Information for Upflow Furnace Ð2ÐÐ3Ð Blower Motor and WheelÐ4Ð Cleaning Heat ExchangerÐ5Ð Electrical Controls and WiringTroubleshooting Ð6Ð ÐHeating and Cooling Application Wiring DiagramÐ7Ð ÐUnit Wiring DiagramÐ8Ð

394HAD, 396HAD specifications

The Bryant 394HAD and 396HAD are high-efficiency air conditioning systems designed to provide optimal comfort and energy savings for residential applications. Both units are engineered with advanced technologies that make them stand out in the competitive HVAC market.

One of the main features of both the 394HAD and 396HAD is their impressive Seasonal Energy Efficiency Ratio (SEER) ratings. These models boast SEER ratings exceeding 16, which means they convert a greater portion of energy into cooling, resulting in lower energy bills and reduced environmental impact. The higher the SEER rating, the more energy-efficient the unit, making these models a smart choice for homeowners looking to minimize their carbon footprint.

Another significant characteristic is the variable-speed compressor technology employed in both models. This innovative feature allows the units to adjust their cooling output based on the specific needs of the home, leading to improved comfort levels and energy savings. The variable-speed operation provides a quieter performance, as the system operates at lower speeds during off-peak times, reducing noise pollution and enhancing indoor comfort.

The Bryant 394HAD and 396HAD models are also equipped with advanced refrigeration technologies, including a state-of-the-art coil design. These systems utilize enhanced aluminum or copper coils that improve heat exchange efficiency, maximizing the cooling performance. Furthermore, both models include a durable, weather-resistant cabinet that protects the internal components from harsh outdoor conditions, ensuring longevity and reliable operation.

In terms of convenience and ease of use, both units are compatible with Bryant’s smart thermostats and home automation systems. This integration enables homeowners to control their HVAC systems remotely, adjust settings, and monitor energy consumption, providing added comfort and peace of mind.

Lastly, the Bryant 394HAD and 396HAD are backed by a robust warranty program, reflecting the manufacturer’s commitment to quality and customer satisfaction. With a combination of cutting-edge technology, high efficiency, and user-friendly features, these air conditioning models are excellent options for achieving a comfortable home environment while also being mindful of energy usage.
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