Symptoms of Abnormal Operation

 

 

Diagnostic/Status

 

 

 

 

 

ComfortNet™

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Fault Description

 

 

Thermostat Only

 

 

Possible Causes

 

 

Corrective Actions

 

 

Notes & Cautions

 

 

 

 

 

 

(Legacy & ComfortNet™ Thermostat)

 

 

LED Codes

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Message

Code

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ξ

Furnace fails to operate on high stage;

 

E8

ξ

High stage pressure

 

PS2

E8

ξ

High stage pressure switch

ξ

Replace high stage pressure

ξ

Turn power OFF prior to

 

 

 

 

 

furnace operates normally on low stage.

 

 

switch circuit is closed at

 

CLOSED

 

 

 

contacts sticking.

 

switch.

 

repair.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ξ Integrated control module LED display

 

 

 

 

start of heating cycle.

 

 

 

 

ξ

Shorts in pressure switch circuit

ξ

Repair short in wiring

ξ

Replace pressure switch

 

 

 

 

 

provides E8 error code.

 

 

 

ξ Induced draft blower is

 

 

 

 

 

wiring.

 

 

 

 

with correct replacement

 

 

 

 

 

 

 

 

 

 

 

operating.

 

 

 

 

 

 

 

 

 

 

 

part.

 

 

 

 

 

 

 

 

 

 

ξ Furnace is operating on

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

low stage only

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ξ

Furnace fails to operate on high stage;

 

E9

ξ

High stage pressure

 

PS2 OPEN

E9

ξ

Pressure switch hose blocked

ξ

Inspect pressure switch hose.

ξ

Turn power OFF prior to

 

 

 

 

 

furnace operates normally on low stage.

 

 

switch circuit is not

 

 

 

 

 

pinched, or connected

 

Repair/replace if necessary.

 

repair.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ξ Integrated control module LED display

 

 

 

 

closed.

 

 

 

 

 

improperly.

ξ

Inspect flue and/or inlet air

ξ

Replace pressure switch

 

 

 

 

 

provides E9 error code.

 

 

 

ξ Induced draft blower is

 

 

 

 

ξ Blocked flue and/or inlet air pipe,

 

piping for blockage, proper

 

with correct replacement

 

 

 

 

 

 

 

 

 

 

 

operating.

 

 

 

 

 

blocked drain system or weak

 

length, elbows, and termination.

 

part.

 

 

 

 

 

 

 

 

 

 

ξ Furnace is operating on

 

 

 

 

 

induced draft blower.

 

Check drain system. Correct as

ξ

Replace induced draft

 

 

 

 

 

 

 

 

 

 

 

low stage only

 

 

 

 

ξ Incorrect pressure switch set

 

necessary.

 

blower with correct

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

point or malfunctioning switch

ξ

Check induced draft blower

 

replacement part.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

contacts.

 

performance. Correct as

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ξ Loose or improperly connected

 

necessary.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

wiring.

ξ

Correct pressure switch set point

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

or contact motion.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ξ

Tighten or correct wiring

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

connection.

 

 

 

 

 

 

 

ξ Furnace fails to operate.

 

EA

ξ Polarity of 115 volt AC

 

REVERSED

EA

ξ

Polarity of 115 volt AC power to

ξ

Review wiring diagram to

ξ

Turn power OFF prior to

 

 

 

 

ξ Integrated control module LED display

 

 

is reversed

 

PLTY

 

 

 

furnace or integrated module is

 

correct polarity.

 

repair.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

provides EA error code.

 

 

 

 

 

 

 

 

 

 

 

revered.

ξ

Verify proper ground. Correct if

 

 

 

 

 

 

 

ξ ComfortNet™ thermostat “Call for

 

 

 

 

 

 

 

 

 

 

ξ

Poor unit ground

 

necessary.

 

 

 

 

 

 

 

 

Service” icon illuminated.

 

 

 

 

 

 

 

 

 

 

 

 

 

ξ

Check and correct wiring.

 

 

 

 

 

 

 

ξ ComfortNet™ thermostat scrolls “Check

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Furnace” message.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

41

 

ξ Furnace fails to operate.

 

d0

ξ

Data not yet on network.

 

NO NET

d0

ξ

Furnace does not contain any

ξ

Populate shared data set using

ξ

Turn power OFF prior to

 

 

 

ξ

Integrated control module LED display

 

 

 

 

 

 

 

DATA

 

 

 

shared data.

 

memory card.

 

repair

 

 

 

 

 

0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ξ

Use memory card for the

 

 

 

 

 

provides d error code.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

specific model.

 

 

 

 

ξ ComfortNet™ thermostat “Call for

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Service” icon illuminated.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ξ

Insert memory card

 

 

 

 

ξ ComfortNet™ thermostat scrolls “Check

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

BEFORE turning power

 

 

 

 

 

Furnace” message.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ON. Memory card may be

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

removed after data is

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

loaded.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ξ

Turn power OFF before

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

removing memory card.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ξ

Error code will be cleared

 

TROUBLESHOOTING

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

once data is loaded.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CHART

Page 41
Image 41
Goodman Mfg VC8 instruction manual Chart, Message

VC8 specifications

Goodman Manufacturing has established itself as a leading provider of quality heating, ventilation, and air conditioning (HVAC) systems. Among its impressive lineup is the Goodman VC8, a versatile and efficient variable-capacity air conditioner that stands out due to its innovative design and advanced technologies.

The Goodman VC8 is known for its superior energy efficiency, featuring a SEER (Seasonal Energy Efficiency Ratio) rating higher than 20. This means that it operates efficiently across various climatic conditions, ensuring optimal cooling with minimal energy consumption. The high SEER rating not only translates to lower energy bills but also contributes to a reduced environmental footprint, making it a smart choice for eco-conscious consumers.

One of the standout features of the VC8 is its variable-speed compressor, which allows the system to adjust its output based on the cooling needs of the space. This technology enables the unit to run at lower speeds for longer periods, maintaining a consistent temperature while reducing energy usage. The variable-speed operation also contributes to quieter operation compared to traditional air conditioning systems. Homeowners can enjoy a peaceful indoor environment without the disruptive noise commonly associated with air conditioning units.

In terms of comfort, the Goodman VC8 employs advanced humidity control features, ensuring that moisture is efficiently managed within the space. This not only enhances comfort levels but also helps to prevent issues related to excessive humidity, such as mold growth and structural damage.

The VC8 is designed for reliable performance and durability, with its robust construction and dependable components. Goodman manufactures its products with high-quality materials to withstand the rigors of daily use and various weather conditions, ensuring long-lasting operation.

Additionally, the VC8 incorporates smart technology features, including compatibility with Wi-Fi-enabled thermostats. Homeowners can easily monitor and control their system remotely, providing convenience and peace of mind.

The Goodman VC8 is an exemplary solution for those looking for an energy-efficient, advanced air conditioning system. With its variable-speed compressor, excellent humidity control, durable construction, and smart features, it promises comfort and reliability suitable for any residential space. By choosing Goodman, homeowners can invest in a quality HVAC system designed to meet modern needs and preferences.