MCAC-KTSM-2009-03 Troubleshooting
Heat Recovery Ventilation 19
14. Troubleshooting
14.1 Lamp flashes:
No. Operation lamp Timer lamp Defrosting lamp Alarm lamp Explanation
1 ★ ○ ○ ○ T4 sensor error
2 ★ ★ ○ ○ T1 sensor error
3 ★ ○ ★ Current protection
4 ★ ○ ○ ★ Phase absent, phase error
Note: ●:Light, ○:Extinguish, ☆:Slow flash, ★:Quick flash
T1 temp. sensor: site at the return air cavity.
T4 temp. sensor: site at the outdoor air inlet cavity.