d0 No shared data on the control

What the control is telling you

The control has no model data (shared data) loaded, so the furnace will not run. ComfortNet thermostat shows NO NET DATA d0.

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

Likely causes

• Shared data never loaded (often after a control replacement)

Test and repair steps

1. Safety turn power off before working on the control or wiring.
2. Get the memory card for this exact model.
3. Power off, plug the card in, then turn the power on. Data loads at power-up.
4. Turn the power off again before you pull the card out.
5. The code clears once the data is loaded.

Settings for these units

• Normal status displays (7-segment) · Goodman/Amana GM9S96/AM9S96
• Normal status displays (7-segment) · Goodman/Amana GM9S80/AM9S80
• Normal status displays (7-segment) · Goodman/Amana GM9C96/AM9C96
• Minimum recommended filter size · Goodman/Amana GM9C96/AM9C96

Models that show this code

10 models in Goodman/Amana *MVC95/*CVC9 two-stage ComfortNet

Other codes on the same units

• b7 Blower motor missing parameters
• b9 Low indoor airflow
• C1 Low-stage cooling
• C2 High-stage cooling
• d4 Memory card data rejected
• E0 Lockout - ignition failed 3 times
• E1 Low-stage pressure switch closed at start of heat
• E2 Low-stage pressure switch will not close