Hold 62 Fan speed not proved

What the control is telling you

Control does not see the expected blower speed signal. It flashes up briefly before every ignition as the blower drives to light-off speed; only a problem if it stays.

Applies to: Trinity Tft60, Tft85, Tft110, Tft154, Tft201, Tft285, Tft340, Tft399

Likely causes

• Normal during drive to light-off (momentary)
• Blown fuse A (blower has no power)
• Loose blower wiring or connectors
• Failed blower or control board

Test and repair steps

1. Check fuse A
2. Check the blower connectors at both the control and the blower
3. If the code stays 15 seconds or longer with the blower running, read the fan speed on the display; if it shows LOW RPM, HIGH RPM, 0 or a jumping value, try another control and replace the blower if the code stays

Models that show this code

13 models in Trinity Tft

Other codes on the same units

• Hold 6 Internal fault: Invalid processor clock
• Hold 61 Anti short-cycle delay
• Hold 61 Anti short-cycle delay
• Hold 62 Fan speed not proved
• Hold 63 LCI off (limit control input)
• Hold 63 LCI off (limit control input)
• Hold 65 Interrupted air switch off
• Hold 65 Interrupted air switch off