Zehnder Rittling ComfoAir Q Installer Manual

Also see for ComfoAir Q: User manual Installer manual

Contents

Zehnder Rittling ComfoAir Q Installer Manual Manual pdf 45 page image

EN - 459.15 What to do in the event of a malfunction (or problem) without a malfunction alert(troubleshooting)Problem: The display and fans of the unit are off.Question Answer Action1 Is the mains power connected? Yes 1. Open the semi-transparent visor.2. Pull the cable tray cover forwards.3. Go to the next question.No Connect the mains power.2 Is the power cable connected?(Check unit side and wall side)Yes 1. Access the control PCB as instructed in the chapter “How to gain access tothe control PCB”.2. Go to the next question.No Connect the power cable.3 Is a power signal present (230VAC) onthe control PCB?Yes 1. Get the control PCB service set.2. Replace the control PCB as instructed in its supplied manual.No Replace the power cable.Problem: The supply temperature is high in the summer.Question Answer Action1 Is the modulating by-pass function setto DISABLE?9 Yes Set the modulating by-pass function to AUTO or OPEN. 9No Go to the next question.2 Is the unit in heating season?10 Yes Set the limit RMOT (average outside temperature over 5 days) heat to the correctvalue.10No Decrease the temperature profile.11Problem: The supply temperature is low in the winter.Question Answer Action1 Is the modulating by-pass function setto OPEN?9 Yes Set the modulating by-pass function to AUTO or DISABLE. 9No Go to the next question.2 Is the unit in cooling season?10 Yes Set the limit RMOT (average outside temperature over 5 days) cool to the correctvalue.10No Increase the temperature profile.11Problem: The unit will not turn onQuestion Answer Action1 Is the power supply of the unitconnected?Yes Go to the next question.No Connect the power supply of the unit2 Is something wrong with the powercable?Yes Replace the cable.No Go to the next question.3 Is the power in the fuse box turned on? Yes Go to the next question.No Turn the power in the fuse box on.4 Do you have power in the rest of thedwelling?Yes 1. If the unit is a ComfoAir Q 350 get a F5010 fuse. Otherwise get a F5015 fuse.2. Access the main power fuse as instructed in the chapter “How to gain accessto the main power fuse of the unit”.3. Replace the main power fuse of the unit.No Call your power supplier to report a power out.9 You can find the modulating by-pass settings in menu> MENU > TASK MENU > BYPASS10 You can find the current season and the RMOT heat settings in menu> MENU > STATUS > SEASON DETECTION > SEASON11 You can find the temperature profile setting in menu> MENU > TASK MENU > TEMPERATURE PROFILE