Operating display HP8580 Innergize

Operating display for the Hapro Innergize HP8580

Error codes:

E1: Internal Timer is defective
E4: Communication between display and circuit board lost
E23: Left relay or overrule relay stays open incorrectly.
E24: Right relay stays open incorrectly.
E25: Left infrared lamp broken or not making contact
E26: Right infrared lamp broken or not making contact
E27: Communication error between overrule circuit and control display
E28: Communication error between overrule circuit and control display