Alarm codeAL AH
The amplifier is overheating with cooling fins above 100°C, requiring ambient temperature control below +55°C or contacting support if detected under normal conditions. The manual's first action is: “In case the alarm was detected below 55°C, contact us.”
- Model
- RYS MHT260a
- Display shows
- Amp heat, amplifier overheating (AL AH)
- Type
- Alarm code
- Source
- Manual p. 247
What AL AH means
Amp heat, amplifier overheating p. 251
Common causes
- Amp heat, amplifier overheating p. 251
- The temperature of cooling-fins of the amplifier is above 100°C. p. 251
- The ambient temperature for the amplifier should be below +55°C. The lifetime of large-capacity capacitor in the amplifier greatly varies depending on the ambient temperature. p. 251
What to do
- In case the alarm was detected below 55°C, contact us. p. 251
Before you service the product, read the safety instructions in the manual p. 3.
If AL AH is still not resolved
- Contact Fuji for special systems or applications such as atomic-energy control, aerospace use, medical use, and traffic control. p. 4 “Customers, who want to use the products introduced in this manual for special systems or devices such as for atomic-energy control, aerospace use, medical use, and traffic control, are requested to consult the Fuji.”
This page summarises what the manufacturer’s manual says about AL AH; each statement links to the page it comes from, and quoted lines are copied word for word. It is not a substitute for the manual or for a qualified installer. ManualLib is not affiliated with RYS. Found a mistake? Report an error.