Goodman Mfg CVM96 사용자 설명서

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The pressure switches are normally-open (closed during opera-
tion) negative air pressure-activated switches.  They monitor the
airflow (combustion air and flue products) through the heat ex-
changer via pressure taps located on the induced draft blower and
the coil front cover.  These switches guard against insufficient air-
flow (combustion air and flue products) through the heat exchanger
and/or blocked condensate drain conditions.

The flame sensor is a probe mounted to the burner/manifold as-
sembly which uses the principle of flame rectification to determine
the presence or absence of flame.

NOTE:  Discharge body’s static electricity before touching unit.
An electrostatic discharge can adversely affect electrical
components.

Use the following precautions during furnace installation and ser-
vicing to protect the integrated control module from damage.  By
putting the furnace, the control, and the person at the same elec-
trostatic potential, these steps will help avoid exposing the inte-
grated control module to electrostatic discharge.  This procedure
is applicable to both installed and uninstalled (ungrounded) fur-
naces.

1. Disconnect all power to the furnace.  Do not touch the

integrated control module or any wire connected to the
control prior  to discharging your body’s electrostatic  charge
to ground.

2. Firmly touch a clean, unpainted, metal surface of the furnace

away from the control.  Any tools held in a  person’s hand
during grounding will be discharged.

3. Service integrated control module or connecting wiring

following the discharge process in step 2.  Use caution not
to recharge your body with static electricity; (i.e., do not
move or shuffle your feet, do not touch ungrounded objects,
etc.).  If you come in contact with an ungrounded object,
repeat step 2 before touching control or wires.

4. Discharge your body to ground before removing a new

control from its container.  Follow steps 1 through 3 if
installing the control on a furnace.  Return any old or new
controls to their containers before touching any ungrounded
object.

Refer to the Troubleshooting Codes for assistance in determining
the source of unit operational problems.  The dual 7-segment LED
display will display an error code that may contain a letter and
number. The error code may be used to assist in troubleshooting
the unit.

Furnace lockout results when a furnace is unable to achieve igni-
tion after three attempts during a single call for heat.  It is charac-
terized by a non-functioning furnace and a E 0 code displayed on
the dual 7-segment display.  If the furnace is in “lockout”, it will (or
can be) reset in any of the following ways.

1. Automatic reset.  The integrated control module will

automatically reset itself and attempt to resume normal
operations following a one hour lockout period.

2. Manual power interruption.  Interrupt 115 volt power to the

furnace.

3. Manual thermostat cycle.  Lower the  thermostat so that

there is no longer a call for heat for 1 -20 seconds then
reset to previous setting.

NOTE:  If the condition which originally caused the lockout still
exists, the control will return to lockout.  Refer to the Troubleshooting
Codes for aid in determining the cause.