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Goodman · technician tips

Goodman service menus, test modes and resets

12 tips for air handler, furnace: access codes, button combinations, test modes and the resets you need at the appliance.

Jump to: Access & passwords (1) · Service & test modes (2) · Reset & cancel (6) · Settings shortcuts (2) · Commissioning (1)

Access & passwords

Installer and service menu codes, and how to get into them.

Open the furnace advanced menus from a ComfortNet thermostat

Furnace · Goodman/Amana *MVC95/*CVC9 two-stage ComfortNet

Fault history, model data and blower set-up are reached through the CTK01 thermostat.

  1. On the home screen touch Menu.
  2. Hold Installer Config about 3 seconds (thermostat options).
  3. Hold Installer Config again about 3 seconds (advanced installer menu). The fault screen shows first.
  4. Use - / + to pick the furnace, then Installer Config to enter its submenus.
  5. Menu backs out one level. Run Schedule exits to the home screen.

Applies to: GMVC95/AMVC95 upflow and *CVC9 counterflow two-stage furnaces

Source: Goodman *CVC9/95 & *MVC95 Installation Instructions IO-341D (08/2010), ComfortNet Advanced Features p.43-44. Written in our own words; check the manual for your exact model.

Service & test modes

Forced fan, low and high fire, test and diagnostic modes, error history and live data.

Run the R-32 leak alarm test (RDS test mode)

Air handler · Goodman/Amana R-32 AMST/AWSF/ACSF air handlers

Simulates an R-32 leak alarm for 5 minutes to prove the system reacts; the red LED flashes fast as in a real alarm.

  1. Press the manual test button on the control board 2 times within 5 seconds
  2. The LED flashes fast and the control acts as if a leak were detected
  3. The test ends by itself after 5 minutes, or press the button once to stop it early

Applies to: AMST/AWSF/ACSF R-32 air handlers

Source: R-32 GLXS/GLZS and AMST/AWSF service RS6200301, RDS A2L PCB FAULT CODE table p.25 and Recommended Action table p.26. Written in our own words; check the manual for your exact model.

View and clear the last 6 furnace faults

Furnace · Goodman/Amana *MVC95/*CVC9 two-stage ComfortNet

The furnace keeps its last six faults, newest first. The same fault repeating is stored only 3 times in a row.

  1. Open the furnace advanced menus from the ComfortNet thermostat.
  2. Go to DIAGNOSTICS: FAULT #1 is the newest, FAULT #6 the oldest.
  3. Set CLEAR to YES to wipe the history. Clear it after you finish a service call.

Applies to: GMVC95/AMVC95 upflow and *CVC9 counterflow two-stage furnaces

Source: Goodman *CVC9/95 & *MVC95 Installation Instructions IO-341D (08/2010), Diagnostics p.45-46. Written in our own words; check the manual for your exact model.

Reset & cancel

Clearing lockouts, service reminders and fault history; skipping purge or de-air programs.

Restart indoor-outdoor communication (Lrn)

Air handler · Goodman/Amana ComfortBridge AVPTC/MBVC

The Lrn menu action restarts communication between the indoor and outdoor units.

  1. Scroll to Lrn with the Left or Right button
  2. Press the Center button to select it

Applies to: AVPTC / MBVC ComfortBridge air handlers

Source: Goodman ComfortNet ASXC-DSXC-GSXC / ASZC-DSZC-GSZC / AVPTC-MBVC service, Air Handler Display (B*) menu table pp.61-62 and Menu Navigation p.64. Written in our own words; check the manual for your exact model.

View and clear the 6 most recent faults (FCL / L6F)

Air handler · Goodman/Amana ComfortBridge AVPTC/MBVC

On communicating systems the FCL menu item (labelled L6F in the furnace-style menu) shows the 6 most recent faults and lets you clear them.

  1. Use the Left or Right button to scroll to FCL
  2. Press the Center button to enter the menu and read the codes
  3. Clear them from the same menu if wanted

Applies to: AVPTC / MBVC ComfortBridge air handlers

Source: Goodman ComfortNet ASXC-DSXC-GSXC / ASZC-DSZC-GSZC / AVPTC-MBVC service, Air Handler Display (B*) menu table pp.61-62 and Menu Navigation p.64. Written in our own words; check the manual for your exact model.

Clear an E0 lockout (3 ways)

Furnace · Goodman/Amana *MVC95/*CVC9 two-stage ComfortNet

Lockout after 3 failed ignition tries clears in any of these ways.

  1. Wait: the control resets itself after 1 hour.
  2. Cut 115 V power to the furnace and restore it.
  3. Turn the thermostat down so there is no heat call for 1-20 seconds, then set it back.
  4. If the fault is still there, it goes straight back into lockout.

Applies to: GMVC95/AMVC95 upflow and *CVC9 counterflow two-stage furnaces

Source: Goodman *CVC9/95 & *MVC95 Installation Instructions IO-341D (08/2010), Resetting from Lockout p.50. Written in our own words; check the manual for your exact model.

Reset the ComfortNet network (learn button)

Furnace · Goodman/Amana *MVC95/*CVC9 two-stage ComfortNet

The learn button on the furnace control resets communication.

  1. Press once quickly = power-up reset.
  2. Hold about 2 seconds = out-of-box reset.
  3. The red LED shows 2 flashes while it resets.

Applies to: GMVC95/AMVC95 upflow and *CVC9 counterflow two-stage furnaces

Source: Goodman *CVC9/95 & *MVC95 Installation Instructions IO-341D (08/2010), Network Troubleshooting p.47. Written in our own words; check the manual for your exact model.

Reset the furnace control to factory defaults (rFd)

Furnace · Goodman/Amana GM9S96/AM9S96, Goodman/Amana GM9S80/AM9S80, Goodman/Amana GM9C96/AM9C96

The rFd menu item returns the control menu settings to factory defaults.

  1. Press the left or right switch until rFd shows
  2. Press the center switch, pick yes or no with the left or right switch
  3. Press the center switch to confirm

Applies to: GM9S96/AM9S96, GM9S80/AM9S80 and GM9C96/AM9C96 furnaces (7-segment control)

Source: GM9S96 service RS6612022r1, LED Display Menu p.27 and chart p.29; GM9S80 service RS6621008r2, LED Display Menu p.30 and chart p.32; GM9C96 service RS6612020r1, LED Display Menu p.33 and chart p.35. Written in our own words; check the manual for your exact model.

View and clear the last 6 stored faults (L6F)

Furnace · Goodman/Amana GM9S96/AM9S96, Goodman/Amana GM9S80/AM9S80, Goodman/Amana GM9C96/AM9C96

The L6F menu item lists the last 6 fault codes, newest first. Read the stored code through the sight glass before opening the blower door, since opening it without holding the door switch closed erases the stored code.

  1. Press the left or right switch until L6F shows
  2. Press the center switch and read the stored faults
  3. To erase them, keep the center switch pressed for 5 to 30 seconds; the display blinks three dashes three times, then shows L6F again

Applies to: GM9S96/AM9S96, GM9S80/AM9S80 and GM9C96/AM9C96 furnaces (7-segment control)

Source: GM9S96 service RS6612022r1, LED Display Menu p.27 and chart p.29; GM9S80 service RS6621008r2, LED Display Menu p.30 and chart p.32; GM9C96 service RS6612020r1, LED Display Menu p.33 and chart p.35. Written in our own words; check the manual for your exact model.

Settings shortcuts

Where the useful parameters live and what they are set to from the factory.

Turn on dehumidification

Furnace · Goodman/Amana *MVC95/*CVC9 two-stage ComfortNet

Blower drops to about 82% of the cooling speed on a combined cool + dehumidify call.

  1. Power off.
  2. Wire a 24 V dehumidistat that opens on humidity rise: neutral to DEHUM, hot to R, ground to the junction box screw.
  3. Set S5 switch 9 ON.
  4. On non-communicating systems jumper Y1 to DEHUM (and Y1 to O for ramping profiles).
  5. Power back on.

Applies to: GMVC95/AMVC95 upflow and *CVC9 counterflow two-stage furnaces

Source: Goodman *CVC9/95 & *MVC95 Installation Instructions IO-341D (08/2010), 24 Volt Dehumidistat Wiring p.29; Thermostat Wiring p.28; DIP Switches p.52. Written in our own words; check the manual for your exact model.

Use a single-stage thermostat (timed staging)

Furnace · Goodman/Amana *MVC95/*CVC9 two-stage ComfortNet

With a single-stage stat the furnace runs low fire first and steps to high fire on a timer.

  1. Power off.
  2. S1 switch 3 OFF = single-stage thermostat (ON = two-stage).
  3. S1 switch 4 OFF = fixed 5 minute step-up, ON = auto (1-12 minutes based on the last 3 cycles).
  4. Power back on.

Applies to: GMVC95/AMVC95 upflow and *CVC9 counterflow two-stage furnaces

Source: Goodman *CVC9/95 & *MVC95 Installation Instructions IO-341D (08/2010), Single-Stage Thermostat Application p.28-29; DIP Switches p.52. Written in our own words; check the manual for your exact model.

Commissioning

Start-up and set-up steps that are easy to miss.

Reload model data with the memory card

Furnace · Goodman/Amana *MVC95/*CVC9 two-stage ComfortNet

Used for d0 / d4 or after a control swap.

  1. Use the memory card for this exact model.
  2. Power off, insert the card, power on. Data loads at power-up.
  3. Power off before removing the card.

Applies to: GMVC95/AMVC95 upflow and *CVC9 counterflow two-stage furnaces

Source: Goodman *CVC9/95 & *MVC95 Installation Instructions IO-341D (08/2010), Troubleshooting Chart p.55-56. Written in our own words; check the manual for your exact model.

Related

Goodman error codes · Goodman parts

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For licensed technicians. Installer menus, test modes and access codes change settings that affect safety; only use them if you are trained on the appliance and understand the result. Gas, electrical and refrigerant work must be done by a qualified, licensed person, and the manufacturer’s manual for the exact model and local codes always take priority. HVACopedia is not affiliated with any manufacturer; brand and model names only identify the equipment.