HVAC Sales Master

Fault Code Lookup

HVAC Sales Master
Call for Service icon
Thermostat-level service alert indicating active equipment fault
This code typically points to
  • Mirrors active equipment fault from connected indoor or outdoor unit
  • Public docs show it paired with board codes such as E0, E1, E2, E3, E4, E7, E8, E9, d0, d4, b0, b1, b2, b3, b7
Next checks to confirm
  1. Read active equipment-board code on indoor/outdoor unit
  2. Use thermostat service alert as pointer, not the final fault definition
  3. Use the applicable equipment troubleshooting chart
Escalation
Service alert remains while active equipment fault is present
Reset behavior
Clears when underlying equipment fault clears.
Urgent
Fix now
Need deeper detail?
Retrieve the subcode for this platform:
  1. For Daikin One+ thermostat: Enter commissioning/advanced menus
  2. Daikin One+: Go to Step 4: System Optimization > Error History
  3. Daikin One+: Review each logged error by date/time, code-equipment pairing, and description
  4. Daikin One+: Where supported, review the minor error code field
  5. Daikin One+: Use Clear Error History when needed
  6. For Goodman ComfortNet board (no Daikin thermostat): From the status menu, depress the right push button once
  7. Goodman ComfortNet: Use left or right button to review fault history
  8. Goodman ComfortNet board: recall last 6 faults from fault-history menu
Source
DC96VC/DM96VC Service Instructions troubleshooting chart entries repeatedly show ComfortNet thermostat 'Call for Service' icon illuminated for active furnace faults, pp.45-48
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