HVAC, Appliance, CNC, and VFD Error Code Repair Guides
Browse repair guides for HVAC, appliances, refrigeration, CNC alarms, VFD faults, generators, boilers, water heaters, and commercial equipment.
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Navien Error Code E016 — Causes & Fix
Troubleshoot Navien error code E016 on boilers and tankless water heaters with checks for gas, venting, sensors, pumps, ignition, and service limits.
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Okuma CNC Alarm 1201 — Causes & Fix
Okuma alarm 1201 guide for spindle overload, cutting load, tooling, spindle bearings, drive cooling, overload resets, and service checks.
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Rinnai Error Code 14 — Causes & Fix
Troubleshoot Rinnai error code 14 on boilers and tankless water heaters with checks for gas, venting, sensors, pumps, ignition, and service limits.
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Rinnai Error Code 31 — Causes & Fix
Troubleshoot Rinnai error code 31 on boilers and tankless water heaters with checks for gas, venting, sensors, pumps, ignition, and service limits.