Heater plate triac circuit faulty. E30 Power (on/off) button stuck on E31 Mute button stuck on E32 Mode button stuck on E40 Unit not functional tested at time of manufacture MR850 Technical Manual * Revision J * Issued November 2005 * Ref. 185041340 (185041713 internal) Error Description of Fault E41 Failed the functional test at time of manufacture E42 Was not stress tested during manufacture E43 Failed the stress test during manufacture E44 Not tested on functional tester 2 E45 Failed producti

Model 8800 Universal Communicating Thermostat Model 8800 Universal Communicating Thermostat Owner’s Manual Includes Operating Instructions and Warranty Information READ AND SAVE THESE INSTRUCTIONS 61000762A 8800 Tstat Owners.indd 1 3/28/11 4:19:57 PM TAblE Of CONTENTS TAblE Of CONTENTS AbOUT yOUR NEw THERMOSTAT Thermostat features 3 Controls & display overview 4-5 OpERATION Select system mode (HEAT/COOL) 6 Change temperature set point 6 Select fan setting (ON/AUTO/CIRC) 7 Clean screen 7 Maintena

The smallest Aprilaire Humidifier under most operating conditions, has this humidifying capacity. Trouble-free performance and minimum maintenance are assured by the design features of the Aprilaire Humidifier. All unit housing parts that come in contact with water are non-metal and will never rust or corrode. Neither heat nor water will affect them under normal operating conditions. The Water Panel evaporator, designed especially for uniform, high evaporation, along with the Scale Control Inser

It is very possible that you have questions concerning your new humidifier – questions on what it can do for you, and what you should do to receive maximum benefits from it. This booklet is intended to answer these questions. Nature, in producing an invigorating comfortable April day, combines just the right temperature and the right amount of moisture. Aprilaire humidifiers employ the same principle, with refinements, to give you the optimum RH for maximum allowable comfort all winter long. The

INSTALLATION INSTRUCTIONS MANUAL TABLE OF CONTENTS Warning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Model 8870 Thermostat Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 1.HVAC System Pre-Installation Check List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 2. What’s In The Box . . . . . . . . . . . . . . . .

DO NOT LEAVE IN TEST MODE AS HUMIDIFIER WILL NOT OPERATE. 15. Set Humidifier Control to its original position. -15 - MODEL500& 600SERIES MODEL700SERIES REQUIRED MAINTENANCE INSTRUCTIONS (APRILAIRE HUMIDIFIER MODELS 500A, 500M, 600A & 600M) CAUTION Suddenoperationmaycausepersonalinjuryorpropertydamage. TurnHumidifierControltoOFForlowestsettingbeforeservicing. 1. Front Cover 2. Feed Tube 3. Integral Bypass Damper 4. Water Panel Evaporative Assembly 5. Distribution Tray 6. “V” Notches 7. Water Pane

Disconnect power and shut off water supply before servicing. CAUTION! Sudden operation may cause personal injury or property damage. Turn the Aprilaire Humidifier Control to “OFF” or lowest setting before servicing INTRODUCTION Thank you for your recent Aprilaire® Humidifier purchase. We sincerely appreciate your business and are pleased to add your name to our growing list of customers. With this purchase, you have invested in the highest quality equipment currently available. Research Products

MANUAL HUMIDISTAT: Humidifiers controlled by a manual humidistat, simply turn the humidistat to the “Off” position. Shut off the water supply to the humidifier by closing the saddle valve. - 7 VI. PERIODIC PREVENTATIVE MAINTENANCE NOTE: Periodic inspection and preventive maintenance of your total heating system is important for efficient and safe operation. Your heating contractor should include humidifier service at the same time. All models, except No’s. 448 and 445, are equipped with an in-li

. . . .4 •AutomaticMode ..........................................5 •ManualMode ............................................6 Operating Instructions – Models 350, 360, 500M, 600M & 700M . . . . . .9 Checkthe Humidifier Operation ..................................9 AdditionalInformationforAllModels ............................10 EffectofWaterCharacteristics .................................10 AnnualMaintenance .........................................11 AnnualSummerShutdown ......................